56579681 has 8 divisors (see below), whose sum is σ = 59649024. Its totient is φ = 53588160.

The previous prime is 56579657. The next prime is 56579683. The reversal of 56579681 is 18697565.

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 56579681 - 2¹⁸ = 56317537 is a prime.

It is a super-2 number, since 2×56579681² = 6402520604123522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56579683) 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, 17960 + ... + 20873.

It is an arithmetic number, because the mean of its divisors is an integer number (7456128).

Almost surely, 2^56579681 is an apocalyptic number.

It is an amenable number.

56579681 is a deficient number, since it is larger than the sum of its proper divisors (3069343).

56579681 is a wasteful number, since it uses less digits than its factorization.

56579681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38911.

The product of its digits is 453600, while the sum is 47.

The square root of 56579681 is about 7521.9466230491. The cubic root of 56579681 is about 383.9018145418.

The spelling of 56579681 in words is "fifty-six million, five hundred seventy-nine thousand, six hundred eighty-one".