It's about one-two-hundred-fifty-thousandth as heavy as The Great Pyramid of Giza
In other words, 541.10 firkins is 0.0000037 times the weight of The Great Pyramid of Giza, and the weight of The Great Pyramid of Giza is 270,000 times that amount.(a.k.a. Pyramid of Khufu, a.k.a. Pyramid of Cheops) (Cairo, Egypt)
The Great Pyramid of Giza has an estimated mass of 140,000,000 firkins. The 2,300,000 stones used in the construction of the pyramid weighed an average 56 firkins and were quarried from distances of up to 805 km (500 mi) away.
It's about 350,000 times as heavy as a Battery (C)
In other words, 541.10 firkins is 340,000 times the weight of a Battery (C), and the weight of a Battery (C) is 0.0000029 times that amount.(Alkaline)
A "C" size battery weighs 0.0016 firkins. C batteries are typically used in medium-drain devices such as musical instruments.
It's about 400,000 times as heavy as a Tennis Ball
In other words, 541.10 firkins is 383,000 times the weight of a Tennis Ball, and the weight of a Tennis Ball is 0.00000261 times that amount.(ITF Standard; for Type 2 ball)
Per International Tennis Federation standard, regulation tennis balls must weigh about 0.00141 firkins. Competition balls are also tested for bounce height, with the standards requiring that a ball dropped from 254 cm must bounce back to a height of 135 cm to 147 cm.
It's about 500,000 times as heavy as a Golf Ball
In other words, 541.10 firkins is 480,900 times the weight of a Golf Ball, and the weight of a Golf Ball is 0.000002079 times that amount.(per R&A USGA Rules of Golf; maximum rule weight)
According to the Rules of Golf (as approved by the United States Golf Association and the Rules Committee of the Royal and Ancient Golf Club of Saint Andrews), golf balls must weigh no more than 0.001125 firkins. Golf balls are not required to have the familiar dimpled pattern, but the design has been popular since its invention in 1905 because it reduces drag while increasing lift.
It's about 650,000 times as heavy as a Light Bulb
In other words, 541.10 firkins is 650,000 times the weight of a Light Bulb, and the weight of a Light Bulb is 0.0000015 times that amount.(a.k.a. lamp) (for A19-size, 60w, incandescent bulb by Bulbrite; package weight)
A standard, sixty-watt light bulb weighs about 0.00083 firkins. The tightly-coiled filament inside a bulb of this size would measure about 579mm if uncoiled and stretched out.
It's about 900,000 times as heavy as a Battery (AA)
In other words, 541.10 firkins is 920,000 times the weight of a Battery (AA), and the weight of a Battery (AA) is 0.0000011 times that amount.(Alkaline)
An "AA" size battery weighs 0.00059 firkins. AA batteries came into common use during World War II and were given their name by the American National Standards Institute (ANSI) Committee C18 because they were smaller than the "A" size batteries which were invented first.
It's about 1,000,000 times as heavy as a Mouse
In other words, 541.10 firkins is 1,100,000 times the weight of a Mouse, and the weight of a Mouse is 0.00000091 times that amount.(a.k.a. "House mouse", Mus musculus) (adult)
The weight of a mouse is typically an average of 0.00051 firkins. While most mice typically live two to three years, the Methuselah Mouse Prize — an award administered by a non-profit organization which advances aging-related research — was once awarded to a team of scientists whose research resulted in a mouse living just under five years.