57270381 has 16 divisors (see below), whose sum is σ = 87657600. Its totient is φ = 32580288.

The previous prime is 57270371. The next prime is 57270403. The reversal of 57270381 is 18307275.

It is not a de Polignac number, because 57270381 - 2⁵ = 57270349 is a prime.

It is a super-2 number, since 2×57270381² = 6559793079770322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57270371) 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, 1146 + ... + 10763.

It is an arithmetic number, because the mean of its divisors is an integer number (5478600).

Almost surely, 2^57270381 is an apocalyptic number.

It is an amenable number.

57270381 is a deficient number, since it is larger than the sum of its proper divisors (30387219).

57270381 is a wasteful number, since it uses less digits than its factorization.

57270381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12148.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 57270381 is about 7567.7196697552. The cubic root of 57270381 is about 385.4576690319.

The spelling of 57270381 in words is "fifty-seven million, two hundred seventy thousand, three hundred eighty-one".