79182521 has 16 divisors (see below), whose sum is σ = 89280576. Its totient is φ = 70180000.

The previous prime is 79182517. The next prime is 79182529. The reversal of 79182521 is 12528197.

It is not a de Polignac number, because 79182521 - 2² = 79182517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79182529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53846 + ... + 55296.

It is an arithmetic number, because the mean of its divisors is an integer number (5580036).

Almost surely, 2^79182521 is an apocalyptic number.

It is an amenable number.

79182521 is a deficient number, since it is larger than the sum of its proper divisors (10098055).

79182521 is a wasteful number, since it uses less digits than its factorization.

79182521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525 (or 1503 counting only the distinct ones).

The product of its digits is 10080, while the sum is 35.

The square root of 79182521 is about 8898.4561020438. The cubic root of 79182521 is about 429.4142393762.

The spelling of 79182521 in words is "seventy-nine million, one hundred eighty-two thousand, five hundred twenty-one".