57747013 has 4 divisors (see below), whose sum is σ = 57784428. Its totient is φ = 57709600.

The previous prime is 57746993. The next prime is 57747029. The reversal of 57747013 is 31074775.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22724289 + 35022724 = 4767^2 + 5918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57747013 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 57747013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57747073) 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, 16288 + ... + 19513.

It is an arithmetic number, because the mean of its divisors is an integer number (14446107).

Almost surely, 2^57747013 is an apocalyptic number.

It is an amenable number.

57747013 is a deficient number, since it is larger than the sum of its proper divisors (37415).

57747013 is a wasteful number, since it uses less digits than its factorization.

57747013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37414.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 57747013 is about 7599.1455440727. The cubic root of 57747013 is about 386.5240383423.

The spelling of 57747013 in words is "fifty-seven million, seven hundred forty-seven thousand, thirteen".