57136657 has 4 divisors (see below), whose sum is σ = 58530276. Its totient is φ = 55743040.

The previous prime is 57136613. The next prime is 57136661. The reversal of 57136657 is 75663175.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7349521 + 49787136 = 2711^2 + 7056^2 .

It is a cyclic number.

It is not a de Polignac number, because 57136657 - 2¹⁵ = 57103889 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57136697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 696748 + ... + 696829.

It is an arithmetic number, because the mean of its divisors is an integer number (14632569).

Almost surely, 2^57136657 is an apocalyptic number.

It is an amenable number.

57136657 is a deficient number, since it is larger than the sum of its proper divisors (1393619).

57136657 is a wasteful number, since it uses less digits than its factorization.

57136657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393618.

The product of its digits is 132300, while the sum is 40.

The square root of 57136657 is about 7558.8793481574. The cubic root of 57136657 is about 385.1574259219.

The spelling of 57136657 in words is "fifty-seven million, one hundred thirty-six thousand, six hundred fifty-seven".