Dudeney Numbers

Henry Dudeney was an English mathematician who observed the existence of a set of numbers that share a unique property. These numbers are now known as Dudeney numbers. Six such Dudeney numbers exist. They are: 1, 512, 4913, 5832, 17576 and 19683. What makes a number a Dudeney number?

Scroll down for a clue and further down for the answer.

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Clue: Firstly, add up the digits of a Dudeney number.

Scroll down for the answer.

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Answer: Add up the individual digits and cube the sum. This will produce the original number.

An example is 512.

5 + 1 + 2 = 8.

8x8x8 = 512 (the original number).

* This article was originally published here