57261957 has 8 divisors (see below), whose sum is σ = 76414176. Its totient is φ = 38142192.

The previous prime is 57261943. The next prime is 57261983. The reversal of 57261957 is 75916275.

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

It is not a de Polignac number, because 57261957 - 2¹⁰ = 57260933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57261917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3643 + ... + 11304.

It is an arithmetic number, because the mean of its divisors is an integer number (9551772).

Almost surely, 2^57261957 is an apocalyptic number.

It is an amenable number.

57261957 is a deficient number, since it is larger than the sum of its proper divisors (19152219).

57261957 is a wasteful number, since it uses less digits than its factorization.

57261957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16227.

The product of its digits is 132300, while the sum is 42.

The square root of 57261957 is about 7567.1630747593. The cubic root of 57261957 is about 385.4387688921.

The spelling of 57261957 in words is "fifty-seven million, two hundred sixty-one thousand, nine hundred fifty-seven".