57581113 has 4 divisors (see below), whose sum is σ = 57628900. Its totient is φ = 57533328.

The previous prime is 57581089. The next prime is 57581123. The reversal of 57581113 is 31118575.

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 51093904 + 6487209 = 7148^2 + 2547^2 .

It is a cyclic number.

It is not a de Polignac number, because 57581113 - 2⁵ = 57581081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57581123) 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, 22038 + ... + 24511.

It is an arithmetic number, because the mean of its divisors is an integer number (14407225).

Almost surely, 2^57581113 is an apocalyptic number.

It is an amenable number.

57581113 is a deficient number, since it is larger than the sum of its proper divisors (47787).

57581113 is a wasteful number, since it uses less digits than its factorization.

57581113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47786.

The product of its digits is 4200, while the sum is 31.

The square root of 57581113 is about 7588.2219920084. The cubic root of 57581113 is about 386.1535381212.

Adding to 57581113 its reverse (31118575), we get a palindrome (88699688).

The spelling of 57581113 in words is "fifty-seven million, five hundred eighty-one thousand, one hundred thirteen".