57228113 has 4 divisors (see below), whose sum is σ = 57293808. Its totient is φ = 57162420.

The previous prime is 57228097. The next prime is 57228121. The reversal of 57228113 is 31182275.

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 57228113 - 2⁴ = 57228097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57228173) 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, 31523 + ... + 33288.

It is an arithmetic number, because the mean of its divisors is an integer number (14323452).

Almost surely, 2^57228113 is an apocalyptic number.

It is an amenable number.

57228113 is a deficient number, since it is larger than the sum of its proper divisors (65695).

57228113 is an equidigital number, since it uses as much as digits as its factorization.

57228113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65694.

The product of its digits is 3360, while the sum is 29.

The square root of 57228113 is about 7564.9265032781. The cubic root of 57228113 is about 385.3628175903.

The spelling of 57228113 in words is "fifty-seven million, two hundred twenty-eight thousand, one hundred thirteen".