79952517 has 12 divisors (see below), whose sum is σ = 117381004. Its totient is φ = 52427520.

The previous prime is 79952471. The next prime is 79952533. The reversal of 79952517 is 71525997.

It can be written as a sum of positive squares in 2 ways, for example, as 3896676 + 76055841 = 1974^2 + 8721^2 .

It is not a de Polignac number, because 79952517 - 2⁸ = 79952261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79952557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72268 + ... + 73365.

Almost surely, 2^79952517 is an apocalyptic number.

It is an amenable number.

79952517 is a deficient number, since it is larger than the sum of its proper divisors (37428487).

79952517 is a wasteful number, since it uses less digits than its factorization.

79952517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145700 (or 145697 counting only the distinct ones).

The product of its digits is 198450, while the sum is 45.

The square root of 79952517 is about 8941.6171356193. The cubic root of 79952517 is about 430.8016719493.

The spelling of 79952517 in words is "seventy-nine million, nine hundred fifty-two thousand, five hundred seventeen".