Is 581 a deficient number and what is its deficiency?

Is 581 a deficient number?

Here we will explain and calculate if 581 is a deficient number and its deficiency if applicable.

581 is a deficient number if the sum of its proper divisors is less than 581.

The sum of its proper divisors is calculated as follows: 1 + 7 + 83 = 91.

91 is less than 581. Therefore, 581 is a deficient number.

The deficiency of 581 is 581 minus the sum of its proper divisors. Thus, the deficiency of 581 is 581 - 91 = 490

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