Is 245 a deficient number and what is its deficiency?

Is 245 a deficient number?

Here we will explain and calculate if 245 is a deficient number and its deficiency if applicable.

245 is a deficient number if the sum of its proper divisors is less than 245.

The sum of its proper divisors is calculated as follows: 1 + 5 + 7 + 35 + 49 = 97.

97 is less than 245. Therefore, 245 is a deficient number.

The deficiency of 245 is 245 minus the sum of its proper divisors. Thus, the deficiency of 245 is 245 - 97 = 148

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