57166513 has 2 divisors, whose sum is σ = 57166514. Its totient is φ = 57166512.

The previous prime is 57166493. The next prime is 57166537. The reversal of 57166513 is 31566175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34963569 + 22202944 = 5913^2 + 4712^2 .

It is a cyclic number.

It is not a de Polignac number, because 57166513 - 2⁵ = 57166481 is a prime.

It is not a weakly prime, because it can be changed into another prime (57166583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28583256 + 28583257.

It is an arithmetic number, because the mean of its divisors is an integer number (28583257).

Almost surely, 2^57166513 is an apocalyptic number.

It is an amenable number.

57166513 is a deficient number, since it is larger than the sum of its proper divisors (1).

57166513 is an equidigital number, since it uses as much as digits as its factorization.

57166513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 34.

The square root of 57166513 is about 7560.8539861579. The cubic root of 57166513 is about 385.2245005366.

The spelling of 57166513 in words is "fifty-seven million, one hundred sixty-six thousand, five hundred thirteen".