57157131 has 8 divisors (see below), whose sum is σ = 76285584. Its totient is φ = 38066720.

The previous prime is 57157127. The next prime is 57157169. The reversal of 57157131 is 13175175.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57157131 - 2² = 57157127 is a prime.

It is a super-2 number, since 2×57157131² = 6533875248302322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57157171) 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 7 ways as a sum of consecutive naturals, for example, 5796 + ... + 12161.

It is an arithmetic number, because the mean of its divisors is an integer number (9535698).

Almost surely, 2^57157131 is an apocalyptic number.

57157131 is a deficient number, since it is larger than the sum of its proper divisors (19128453).

57157131 is a wasteful number, since it uses less digits than its factorization.

57157131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19021.

The product of its digits is 3675, while the sum is 30.

The square root of 57157131 is about 7560.2335281392. The cubic root of 57157131 is about 385.2034254129.

The spelling of 57157131 in words is "fifty-seven million, one hundred fifty-seven thousand, one hundred thirty-one".