57229013 has 4 divisors (see below), whose sum is σ = 57248268. Its totient is φ = 57209760.

The previous prime is 57228949. The next prime is 57229019. The reversal of 57229013 is 31092275.

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 9591409 + 47637604 = 3097^2 + 6902^2 .

It is a cyclic number.

It is not a de Polignac number, because 57229013 - 2⁶ = 57228949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57229019) 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, 4118 + ... + 11463.

It is an arithmetic number, because the mean of its divisors is an integer number (14312067).

Almost surely, 2^57229013 is an apocalyptic number.

It is an amenable number.

57229013 is a deficient number, since it is larger than the sum of its proper divisors (19255).

57229013 is a wasteful number, since it uses less digits than its factorization.

57229013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19254.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 57229013 is about 7564.9859880901. The cubic root of 57229013 is about 385.3648377205.

The spelling of 57229013 in words is "fifty-seven million, two hundred twenty-nine thousand, thirteen".