57156404 has 12 divisors (see below), whose sum is σ = 100959264. Its totient is φ = 28310904.

The previous prime is 57156401. The next prime is 57156413. The reversal of 57156404 is 40465175.

It is a super-2 number, since 2×57156404² = 6533709036422432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57156401) 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 3 ways as a sum of consecutive naturals, for example, 66344 + ... + 67199.

It is an arithmetic number, because the mean of its divisors is an integer number (8413272).

Almost surely, 2^57156404 is an apocalyptic number.

It is an amenable number.

57156404 is a deficient number, since it is larger than the sum of its proper divisors (43802860).

57156404 is a wasteful number, since it uses less digits than its factorization.

57156404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133654 (or 133652 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 57156404 is about 7560.1854474609. The cubic root of 57156404 is about 385.2017922304.

The spelling of 57156404 in words is "fifty-seven million, one hundred fifty-six thousand, four hundred four".