Is 75 a deficient number and what is its deficiency?

Is 75 a deficient number?

Here we will explain and calculate if 75 is a deficient number and its deficiency if applicable.

75 is a deficient number if the sum of its proper divisors is less than 75.

The sum of its proper divisors is calculated as follows: 1 + 3 + 5 + 15 + 25 = 49.

49 is less than 75. Therefore, 75 is a deficient number.

The deficiency of 75 is 75 minus the sum of its proper divisors. Thus, the deficiency of 75 is 75 - 49 = 26

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