57168989 has 4 divisors (see below), whose sum is σ = 57857856. Its totient is φ = 56480124.

The previous prime is 57168941. The next prime is 57168997. The reversal of 57168989 is 98986175.

57168989 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 57168989 - 2⁸ = 57168733 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 57168989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57168289) 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, 344309 + ... + 344474.

It is an arithmetic number, because the mean of its divisors is an integer number (14464464).

Almost surely, 2^57168989 is an apocalyptic number.

It is an amenable number.

57168989 is a deficient number, since it is larger than the sum of its proper divisors (688867).

57168989 is an equidigital number, since it uses as much as digits as its factorization.

57168989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688866.

The product of its digits is 1088640, while the sum is 53.

The square root of 57168989 is about 7561.0177225027. The cubic root of 57168989 is about 385.2300620798.

The spelling of 57168989 in words is "fifty-seven million, one hundred sixty-eight thousand, nine hundred eighty-nine".