57400631 has 4 divisors (see below), whose sum is σ = 57418200. Its totient is φ = 57383064.

The previous prime is 57400627. The next prime is 57400633. The reversal of 57400631 is 13600475.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57400631 - 2² = 57400627 is a prime.

It is a super-2 number, since 2×57400631² = 6589664878396322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57400631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57400633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2276 + ... + 10953.

It is an arithmetic number, because the mean of its divisors is an integer number (14354550).

Almost surely, 2^57400631 is an apocalyptic number.

57400631 is a deficient number, since it is larger than the sum of its proper divisors (17569).

57400631 is a wasteful number, since it uses less digits than its factorization.

57400631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17568.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 57400631 is about 7576.3204129709. The cubic root of 57400631 is about 385.7496631801.

The spelling of 57400631 in words is "fifty-seven million, four hundred thousand, six hundred thirty-one".