57135517 has 2 divisors, whose sum is σ = 57135518. Its totient is φ = 57135516.

The previous prime is 57135461. The next prime is 57135553. The reversal of 57135517 is 71553175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55442916 + 1692601 = 7446^2 + 1301^2 .

It is a cyclic number.

It is not a de Polignac number, because 57135517 - 2¹¹ = 57133469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57135577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28567758 + 28567759.

It is an arithmetic number, because the mean of its divisors is an integer number (28567759).

Almost surely, 2^57135517 is an apocalyptic number.

It is an amenable number.

57135517 is a deficient number, since it is larger than the sum of its proper divisors (1).

57135517 is an equidigital number, since it uses as much as digits as its factorization.

57135517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18375, while the sum is 34.

The square root of 57135517 is about 7558.8039397778. The cubic root of 57135517 is about 385.1548643301.

The spelling of 57135517 in words is "fifty-seven million, one hundred thirty-five thousand, five hundred seventeen".