57012747 has 16 divisors (see below), whose sum is σ = 87806592. Its totient is φ = 32520320.

The previous prime is 57012737. The next prime is 57012757. The reversal of 57012747 is 74721075.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (57012737) and next prime (57012757).

It is not a de Polignac number, because 57012747 - 2⁴ = 57012731 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (57012707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50253 + ... + 51374.

It is an arithmetic number, because the mean of its divisors is an integer number (5487912).

Almost surely, 2^57012747 is an apocalyptic number.

57012747 is a deficient number, since it is larger than the sum of its proper divisors (30793845).

57012747 is a wasteful number, since it uses less digits than its factorization.

57012747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101658.

The product of its (nonzero) digits is 13720, while the sum is 33.

The square root of 57012747 is about 7550.6785787769. The cubic root of 57012747 is about 384.8787992022.

It can be divided in two parts, 5701 and 2747, that added together give a palindrome (8448).

The spelling of 57012747 in words is "fifty-seven million, twelve thousand, seven hundred forty-seven".