The number 153 is a "narcissistic numbers" because the sums of powers of its digits is equal to the sum of the \( 3^{rd} \) powers of its digits. \[ 153 = 1^3 + 5^3 + 3^3. \]

A "narcissistic number" is a number that the sums of powers of their digits equal to the number itself. In other words, these are \( n-digit \) numbers that are equal to the sum of the \( n^{th} \) powers of their digits.

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