57102931 has 2 divisors, whose sum is σ = 57102932. Its totient is φ = 57102930.

The previous prime is 57102911. The next prime is 57102937. The reversal of 57102931 is 13920175.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57102931 is a prime.

It is a super-2 number, since 2×57102931² = 6521489457581522, which contains 22 as substring.

It is a Chen prime.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 57102931.

It is not a weakly prime, because it can be changed into another prime (57102937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28551465 + 28551466.

It is an arithmetic number, because the mean of its divisors is an integer number (28551466).

Almost surely, 2^57102931 is an apocalyptic number.

57102931 is a deficient number, since it is larger than the sum of its proper divisors (1).

57102931 is an equidigital number, since it uses as much as digits as its factorization.

57102931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 57102931 is about 7556.6481326048. The cubic root of 57102931 is about 385.0816288377.

The spelling of 57102931 in words is "fifty-seven million, one hundred two thousand, nine hundred thirty-one".