57272157 has 8 divisors (see below), whose sum is σ = 84847680. Its totient is φ = 38181420.

The previous prime is 57272147. The next prime is 57272177. The reversal of 57272157 is 75127275.

57272157 is a `hidden beast` number, since 572 + 72 + 15 + 7 = 666.

It is not a de Polignac number, because 57272157 - 2⁷ = 57272029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57272147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1060569 + ... + 1060622.

It is an arithmetic number, because the mean of its divisors is an integer number (10605960).

Almost surely, 2^57272157 is an apocalyptic number.

It is an amenable number.

57272157 is a deficient number, since it is larger than the sum of its proper divisors (27575523).

57272157 is a wasteful number, since it uses less digits than its factorization.

57272157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121200 (or 2121194 counting only the distinct ones).

The product of its digits is 34300, while the sum is 36.

The square root of 57272157 is about 7567.8370093442. The cubic root of 57272157 is about 385.4616534402.

The spelling of 57272157 in words is "fifty-seven million, two hundred seventy-two thousand, one hundred fifty-seven".