57036631 has 4 divisors (see below), whose sum is σ = 57887992. Its totient is φ = 56185272.

The previous prime is 57036607. The next prime is 57036641. The reversal of 57036631 is 13663075.

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 57036631 - 2⁷ = 57036503 is a prime.

It is a super-2 number, since 2×57036631² = 6506354551660322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57036593 and 57036602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57036601) 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, 425580 + ... + 425713.

It is an arithmetic number, because the mean of its divisors is an integer number (14471998).

Almost surely, 2^57036631 is an apocalyptic number.

57036631 is a deficient number, since it is larger than the sum of its proper divisors (851361).

57036631 is an equidigital number, since it uses as much as digits as its factorization.

57036631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851360.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 57036631 is about 7552.2599928763. The cubic root of 57036631 is about 384.9325366696.

The spelling of 57036631 in words is "fifty-seven million, thirty-six thousand, six hundred thirty-one".