Is 1161 a deficient number and what is its deficiency?

Is 1161 a deficient number?

Here we will explain and calculate if 1161 is a deficient number and its deficiency if applicable.

1161 is a deficient number if the sum of its proper divisors is less than 1161.

The sum of its proper divisors is calculated as follows: 1 + 3 + 9 + 27 + 43 + 129 + 387 = 599.

599 is less than 1161. Therefore, 1161 is a deficient number.

The deficiency of 1161 is 1161 minus the sum of its proper divisors. Thus, the deficiency of 1161 is 1161 - 599 = 562

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