Is 455 a deficient number and what is its deficiency?

Is 455 a deficient number?

Here we will explain and calculate if 455 is a deficient number and its deficiency if applicable.

455 is a deficient number if the sum of its proper divisors is less than 455.

The sum of its proper divisors is calculated as follows: 1 + 5 + 7 + 13 + 35 + 65 + 91 = 217.

217 is less than 455. Therefore, 455 is a deficient number.

The deficiency of 455 is 455 minus the sum of its proper divisors. Thus, the deficiency of 455 is 455 - 217 = 238

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