57544813 has 12 divisors (see below), whose sum is σ = 61891200. Its totient is φ = 53484992.

The previous prime is 57544807. The next prime is 57544831. The reversal of 57544813 is 31844575.

57544813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-57544813 is a prime.

It is a super-2 number, since 2×57544813² = 6622811006409938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57544313) 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, 22788 + ... + 25186.

It is an arithmetic number, because the mean of its divisors is an integer number (5157600).

Almost surely, 2^57544813 is an apocalyptic number.

57544813 is the 4798-th heptagonal number.

It is an amenable number.

57544813 is a deficient number, since it is larger than the sum of its proper divisors (4346387).

57544813 is a wasteful number, since it uses less digits than its factorization.

57544813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516 (or 2499 counting only the distinct ones).

The product of its digits is 67200, while the sum is 37.

The square root of 57544813 is about 7585.8297502646. The cubic root of 57544813 is about 386.0723753966.

The spelling of 57544813 in words is "fifty-seven million, five hundred forty-four thousand, eight hundred thirteen".