57557609 has 4 divisors (see below), whose sum is σ = 57576960. Its totient is φ = 57538260.

The previous prime is 57557603. The next prime is 57557639. The reversal of 57557609 is 90675575.

57557609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 57557609 - 2²⁴ = 40780393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57557609.

It is not an unprimeable number, because it can be changed into a prime (57557603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4169 + ... + 11510.

It is an arithmetic number, because the mean of its divisors is an integer number (14394240).

Almost surely, 2^57557609 is an apocalyptic number.

It is an amenable number.

57557609 is a deficient number, since it is larger than the sum of its proper divisors (19351).

57557609 is a wasteful number, since it uses less digits than its factorization.

57557609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19350.

The product of its (nonzero) digits is 330750, while the sum is 44.

The square root of 57557609 is about 7586.6731180406. The cubic root of 57557609 is about 386.1009897103.

The spelling of 57557609 in words is "fifty-seven million, five hundred fifty-seven thousand, six hundred nine".