57011631 has 8 divisors (see below), whose sum is σ = 76455600. Its totient is φ = 37787712.

The previous prime is 57011627. The next prime is 57011663. The reversal of 57011631 is 13611075.

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

It is not a de Polignac number, because 57011631 - 2² = 57011627 is a prime.

It is a super-2 number, since 2×57011631² = 6500652138560322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57011671) 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, 54406 + ... + 55443.

It is an arithmetic number, because the mean of its divisors is an integer number (9556950).

Almost surely, 2^57011631 is an apocalyptic number.

57011631 is a deficient number, since it is larger than the sum of its proper divisors (19443969).

57011631 is a wasteful number, since it uses less digits than its factorization.

57011631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110025.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 57011631 is about 7550.6046777725. The cubic root of 57011631 is about 384.8762879069.

The spelling of 57011631 in words is "fifty-seven million, eleven thousand, six hundred thirty-one".