57137609 has 2 divisors, whose sum is σ = 57137610. Its totient is φ = 57137608.

The previous prime is 57137593. The next prime is 57137651. The reversal of 57137609 is 90673175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48958009 + 8179600 = 6997^2 + 2860^2 .

It is a cyclic number.

It is not a de Polignac number, because 57137609 - 2⁴ = 57137593 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (57167609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28568804 + 28568805.

It is an arithmetic number, because the mean of its divisors is an integer number (28568805).

Almost surely, 2^57137609 is an apocalyptic number.

It is an amenable number.

57137609 is a deficient number, since it is larger than the sum of its proper divisors (1).

57137609 is an equidigital number, since it uses as much as digits as its factorization.

57137609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 57137609 is about 7558.9423201927. The cubic root of 57137609 is about 385.1595650497.

The spelling of 57137609 in words is "fifty-seven million, one hundred thirty-seven thousand, six hundred nine".