56813907 has 16 divisors (see below), whose sum is σ = 78033152. Its totient is φ = 36741600.

The previous prime is 56813899. The next prime is 56813921. The reversal of 56813907 is 70931865.

It is not a de Polignac number, because 56813907 - 2³ = 56813899 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is the 7538-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56813927) by changing a digit.

It is a nontrivial repunit in base 7537.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53532 + ... + 54582.

It is an arithmetic number, because the mean of its divisors is an integer number (4877072).

Almost surely, 2^56813907 is an apocalyptic number.

56813907 is a deficient number, since it is larger than the sum of its proper divisors (21219245).

56813907 is a wasteful number, since it uses less digits than its factorization.

56813907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 56813907 is about 7537.5000497512. The cubic root of 56813907 is about 384.4308383153.

The spelling of 56813907 in words is "fifty-six million, eight hundred thirteen thousand, nine hundred seven".