57047513 has 4 divisors (see below), whose sum is σ = 58014480. Its totient is φ = 56080548.

The previous prime is 57047509. The next prime is 57047537. The reversal of 57047513 is 31574075.

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 not a de Polignac number, because 57047513 - 2² = 57047509 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 57047513.

It is not an unprimeable number, because it can be changed into a prime (57047503) 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, 483395 + ... + 483512.

It is an arithmetic number, because the mean of its divisors is an integer number (14503620).

Almost surely, 2^57047513 is an apocalyptic number.

It is an amenable number.

57047513 is a deficient number, since it is larger than the sum of its proper divisors (966967).

57047513 is an equidigital number, since it uses as much as digits as its factorization.

57047513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966966.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 57047513 is about 7552.9804051116. The cubic root of 57047513 is about 384.9570154968.

The spelling of 57047513 in words is "fifty-seven million, forty-seven thousand, five hundred thirteen".