57568139 has 2 divisors, whose sum is σ = 57568140. Its totient is φ = 57568138.

The previous prime is 57568111. The next prime is 57568153. The reversal of 57568139 is 93186575.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57568139 - 2¹⁶ = 57502603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57568139.

It is not a weakly prime, because it can be changed into another prime (57568339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28784069 + 28784070.

It is an arithmetic number, because the mean of its divisors is an integer number (28784070).

Almost surely, 2^57568139 is an apocalyptic number.

57568139 is a deficient number, since it is larger than the sum of its proper divisors (1).

57568139 is an equidigital number, since it uses as much as digits as its factorization.

57568139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 44.

The square root of 57568139 is about 7587.3670663808. The cubic root of 57568139 is about 386.1245336320.

The spelling of 57568139 in words is "fifty-seven million, five hundred sixty-eight thousand, one hundred thirty-nine".