557912868 has 24 divisors (see below), whose sum is σ = 1378373472. Its totient is φ = 175031424.

The previous prime is 557912867. The next prime is 557912879. The reversal of 557912868 is 868219755.

It is a super-2 number, since 2×557912868² = 622533536559970848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 557912868.

It is not an unprimeable number, because it can be changed into a prime (557912867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1367230 + ... + 1367637.

It is an arithmetic number, because the mean of its divisors is an integer number (57432228).

Almost surely, 2^557912868 is an apocalyptic number.

It is an amenable number.

557912868 is an abundant number, since it is smaller than the sum of its proper divisors (820460604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

557912868 is a wasteful number, since it uses less digits than its factorization.

557912868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734891 (or 2734889 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 51.

The square root of 557912868 is about 23620.1792541886. The cubic root of 557912868 is about 823.2317772462.

The spelling of 557912868 in words is "five hundred fifty-seven million, nine hundred twelve thousand, eight hundred sixty-eight".