57931609 has 4 divisors (see below), whose sum is σ = 58191616. Its totient is φ = 57671604.

The previous prime is 57931607. The next prime is 57931649. The reversal of 57931609 is 90613975.

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 57931609 - 2¹ = 57931607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57931607) 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, 129669 + ... + 130114.

It is an arithmetic number, because the mean of its divisors is an integer number (14547904).

Almost surely, 2^57931609 is an apocalyptic number.

It is an amenable number.

57931609 is a deficient number, since it is larger than the sum of its proper divisors (260007).

57931609 is a wasteful number, since it uses less digits than its factorization.

57931609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260006.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 57931609 is about 7611.2816923301. The cubic root of 57931609 is about 386.9354587488.

The spelling of 57931609 in words is "fifty-seven million, nine hundred thirty-one thousand, six hundred nine".