I can be expressed as the sum of my digits raised to a power, yet I remain unchanged. What am I?
Category: Math · Difficulty: expert
Hint: Think of a special category of number.
Answer
Armstrong number
Explanation
An Armstrong number is equal to the sum of its own digits each raised to the power of the number of digits.
This is a expert math riddle — one of the harder riddles here. The answer is Armstrong number.
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