57122137 has 2 divisors, whose sum is σ = 57122138. Its totient is φ = 57122136.

The previous prime is 57122129. The next prime is 57122147. The reversal of 57122137 is 73122175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39237696 + 17884441 = 6264^2 + 4229^2 .

It is a cyclic number.

It is not a de Polignac number, because 57122137 - 2³ = 57122129 is a prime.

It is not a weakly prime, because it can be changed into another prime (57122147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28561068 + 28561069.

It is an arithmetic number, because the mean of its divisors is an integer number (28561069).

Almost surely, 2^57122137 is an apocalyptic number.

It is an amenable number.

57122137 is a deficient number, since it is larger than the sum of its proper divisors (1).

57122137 is an equidigital number, since it uses as much as digits as its factorization.

57122137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2940, while the sum is 28.

The square root of 57122137 is about 7557.9188272963. The cubic root of 57122137 is about 385.1247967837.

The spelling of 57122137 in words is "fifty-seven million, one hundred twenty-two thousand, one hundred thirty-seven".