57388657 has 8 divisors (see below), whose sum is σ = 61816320. Its totient is φ = 53122080.

The previous prime is 57388619. The next prime is 57388673. The reversal of 57388657 is 75688375.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57388657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57388657.

It is not an unprimeable number, because it can be changed into a prime (57388687) 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, 39532 + ... + 40957.

It is an arithmetic number, because the mean of its divisors is an integer number (7727040).

Almost surely, 2^57388657 is an apocalyptic number.

It is an amenable number.

57388657 is a deficient number, since it is larger than the sum of its proper divisors (4427663).

57388657 is a wasteful number, since it uses less digits than its factorization.

57388657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80543.

The product of its digits is 1411200, while the sum is 49.

The square root of 57388657 is about 7575.5301464650. The cubic root of 57388657 is about 385.7228383432.

The spelling of 57388657 in words is "fifty-seven million, three hundred eighty-eight thousand, six hundred fifty-seven".