56172579 has 8 divisors (see below), whose sum is σ = 74939472. Its totient is φ = 37427040.

The previous prime is 56172533. The next prime is 56172593. The reversal of 56172579 is 97527165.

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

It is not a de Polignac number, because 56172579 - 2⁷ = 56172451 is a prime.

It is a super-2 number, since 2×56172579² = 6310717263022482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56172579.

It is not an unprimeable number, because it can be changed into a prime (56172079) 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, 2409 + ... + 10869.

It is an arithmetic number, because the mean of its divisors is an integer number (9367434).

Almost surely, 2^56172579 is an apocalyptic number.

56172579 is a deficient number, since it is larger than the sum of its proper divisors (18766893).

56172579 is a wasteful number, since it uses less digits than its factorization.

56172579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10677.

The product of its digits is 132300, while the sum is 42.

The square root of 56172579 is about 7494.8368227734. The cubic root of 56172579 is about 382.9788475071.

The spelling of 56172579 in words is "fifty-six million, one hundred seventy-two thousand, five hundred seventy-nine".