56904813 has 12 divisors (see below), whose sum is σ = 93938208. Its totient is φ = 32517000.

The previous prime is 56904811. The next prime is 56904823. The reversal of 56904813 is 31840965.

56904813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56904813 - 2¹ = 56904811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56904811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 451563 + ... + 451688.

It is an arithmetic number, because the mean of its divisors is an integer number (7828184).

Almost surely, 2^56904813 is an apocalyptic number.

It is an amenable number.

56904813 is a deficient number, since it is larger than the sum of its proper divisors (37033395).

56904813 is a wasteful number, since it uses less digits than its factorization.

56904813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903264 (or 903261 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 56904813 is about 7543.5278881966. The cubic root of 56904813 is about 384.6357672901.

The spelling of 56904813 in words is "fifty-six million, nine hundred four thousand, eight hundred thirteen".