57131207 has 6 divisors (see below), whose sum is σ = 66458808. Its totient is φ = 48969564.

The previous prime is 57131177. The next prime is 57131213. The reversal of 57131207 is 70213175.

It is not a de Polignac number, because 57131207 - 2⁶ = 57131143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57131707) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 582923 + ... + 583020.

It is an arithmetic number, because the mean of its divisors is an integer number (11076468).

Almost surely, 2^57131207 is an apocalyptic number.

57131207 is a deficient number, since it is larger than the sum of its proper divisors (9327601).

57131207 is a wasteful number, since it uses less digits than its factorization.

57131207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165957 (or 1165950 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 57131207 is about 7558.5188363859. The cubic root of 57131207 is about 385.1451794073.

The spelling of 57131207 in words is "fifty-seven million, one hundred thirty-one thousand, two hundred seven".