79564521 has 8 divisors (see below), whose sum is σ = 110698560. Its totient is φ = 50736752.

The previous prime is 79564493. The next prime is 79564549. The reversal of 79564521 is 12546597.

It is an interprime number because it is at equal distance from previous prime (79564493) and next prime (79564549).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79564521 - 2⁵ = 79564489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79564521.

It is not an unprimeable number, because it can be changed into a prime (79564591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 576486 + ... + 576623.

It is an arithmetic number, because the mean of its divisors is an integer number (13837320).

Almost surely, 2^79564521 is an apocalyptic number.

It is an amenable number.

79564521 is a deficient number, since it is larger than the sum of its proper divisors (31134039).

79564521 is a wasteful number, since it uses less digits than its factorization.

79564521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153135.

The product of its digits is 75600, while the sum is 39.

The square root of 79564521 is about 8919.8946742661. The cubic root of 79564521 is about 430.1036724968.

The spelling of 79564521 in words is "seventy-nine million, five hundred sixty-four thousand, five hundred twenty-one".