57317557 has 8 divisors (see below), whose sum is σ = 66206592. Its totient is φ = 49041600.

The previous prime is 57317527. The next prime is 57317563. The reversal of 57317557 is 75571375.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-57317557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57317527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153069 + ... + 153442.

It is an arithmetic number, because the mean of its divisors is an integer number (8275824).

Almost surely, 2^57317557 is an apocalyptic number.

It is an amenable number.

57317557 is a deficient number, since it is larger than the sum of its proper divisors (8889035).

57317557 is a wasteful number, since it uses less digits than its factorization.

57317557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306539.

The product of its digits is 128625, while the sum is 40.

The square root of 57317557 is about 7570.8359512012. The cubic root of 57317557 is about 385.5634791667.

The spelling of 57317557 in words is "fifty-seven million, three hundred seventeen thousand, five hundred fifty-seven".