56904457 has 16 divisors (see below), whose sum is σ = 61970832. Its totient is φ = 52049920.

The previous prime is 56904443. The next prime is 56904469. The reversal of 56904457 is 75440965.

It can be written as a sum of positive squares in 8 ways, for example, as 2572816 + 54331641 = 1604^2 + 7371^2 .

It is not a de Polignac number, because 56904457 - 2⁷ = 56904329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56904257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123207 + ... + 123667.

It is an arithmetic number, because the mean of its divisors is an integer number (3873177).

Almost surely, 2^56904457 is an apocalyptic number.

It is an amenable number.

56904457 is a deficient number, since it is larger than the sum of its proper divisors (5066375).

56904457 is a wasteful number, since it uses less digits than its factorization.

56904457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 56904457 is about 7543.5042917732. The cubic root of 56904457 is about 384.6349651867.

The spelling of 56904457 in words is "fifty-six million, nine hundred four thousand, four hundred fifty-seven".