57164609 has 4 divisors (see below), whose sum is σ = 57196116. Its totient is φ = 57133104.

The previous prime is 57164579. The next prime is 57164617. The reversal of 57164609 is 90646175.

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 22118209 + 35046400 = 4703^2 + 5920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57164609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57164669) 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, 12854 + ... + 16719.

It is an arithmetic number, because the mean of its divisors is an integer number (14299029).

Almost surely, 2^57164609 is an apocalyptic number.

It is an amenable number.

57164609 is a deficient number, since it is larger than the sum of its proper divisors (31507).

57164609 is a wasteful number, since it uses less digits than its factorization.

57164609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31506.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 57164609 is about 7560.7280734067. The cubic root of 57164609 is about 385.2202236995.

The spelling of 57164609 in words is "fifty-seven million, one hundred sixty-four thousand, six hundred nine".