57717393 has 4 divisors (see below), whose sum is σ = 76956528. Its totient is φ = 38478260.

The previous prime is 57717379. The next prime is 57717403. The reversal of 57717393 is 39371775.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57717393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57717313) 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, 9619563 + ... + 9619568.

It is an arithmetic number, because the mean of its divisors is an integer number (19239132).

Almost surely, 2^57717393 is an apocalyptic number.

It is an amenable number.

57717393 is a deficient number, since it is larger than the sum of its proper divisors (19239135).

57717393 is a wasteful number, since it uses less digits than its factorization.

57717393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19239134.

The product of its digits is 138915, while the sum is 42.

The square root of 57717393 is about 7597.1963907747. The cubic root of 57717393 is about 386.4579408396.

The spelling of 57717393 in words is "fifty-seven million, seven hundred seventeen thousand, three hundred ninety-three".