57312715 has 4 divisors (see below), whose sum is σ = 68775264. Its totient is φ = 45850168.

The previous prime is 57312709. The next prime is 57312719. The reversal of 57312715 is 51721375.

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

It is a cyclic number.

It is not a de Polignac number, because 57312715 - 2¹¹ = 57310667 is a prime.

It is a Smith number, since the sum of its digits (31) 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 (57312719) 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, 5731267 + ... + 5731276.

It is an arithmetic number, because the mean of its divisors is an integer number (17193816).

Almost surely, 2^57312715 is an apocalyptic number.

57312715 is a deficient number, since it is larger than the sum of its proper divisors (11462549).

57312715 is a wasteful number, since it uses less digits than its factorization.

57312715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11462548.

The product of its digits is 7350, while the sum is 31.

The square root of 57312715 is about 7570.5161647011. The cubic root of 57312715 is about 385.5526218132.

The spelling of 57312715 in words is "fifty-seven million, three hundred twelve thousand, seven hundred fifteen".