57400431 has 32 divisors (see below), whose sum is σ = 87464448. Its totient is φ = 33171840.

The previous prime is 57400363. The next prime is 57400457. The reversal of 57400431 is 13400475.

It is not a de Polignac number, because 57400431 - 2⁷ = 57400303 is a prime.

It is a super-2 number, since 2×57400431² = 6589618957971522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57400331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64270 + ... + 65156.

It is an arithmetic number, because the mean of its divisors is an integer number (2733264).

Almost surely, 2^57400431 is an apocalyptic number.

57400431 is a deficient number, since it is larger than the sum of its proper divisors (30064017).

57400431 is a wasteful number, since it uses less digits than its factorization.

57400431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 57400431 is about 7576.3072139400. The cubic root of 57400431 is about 385.7492151593.

The spelling of 57400431 in words is "fifty-seven million, four hundred thousand, four hundred thirty-one".