57156897 has 16 divisors (see below), whose sum is σ = 89451392. Its totient is φ = 31777920.

The previous prime is 57156859. The next prime is 57156929. The reversal of 57156897 is 79865175.

It is not a de Polignac number, because 57156897 - 2⁸ = 57156641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57156097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36004 + ... + 37557.

It is an arithmetic number, because the mean of its divisors is an integer number (5590712).

Almost surely, 2^57156897 is an apocalyptic number.

It is an amenable number.

57156897 is a deficient number, since it is larger than the sum of its proper divisors (32294495).

57156897 is a wasteful number, since it uses less digits than its factorization.

57156897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73608.

The product of its digits is 529200, while the sum is 48.

The square root of 57156897 is about 7560.2180524109. The cubic root of 57156897 is about 385.2028997408.

The spelling of 57156897 in words is "fifty-seven million, one hundred fifty-six thousand, eight hundred ninety-seven".