557579618 has 18 divisors (see below), whose sum is σ = 853802379. Its totient is φ = 273096132.

The previous prime is 557579573. The next prime is 557579689. The reversal of 557579618 is 816975755.

It can be written as a sum of positive squares in only one way, i.e., 278789809 + 278789809 = 16697^2 + 16697^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=16697.

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 557579618.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1970105 + ... + 1970387.

Almost surely, 2^557579618 is an apocalyptic number.

557579618 is a deficient number, since it is larger than the sum of its proper divisors (296222761).

557579618 is an frugal number, since it uses more digits than its factorization.

557579618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686 (or 344 counting only the distinct ones).

The product of its digits is 2646000, while the sum is 53.

The square root of 557579618 is about 23613.1238509436. The cubic root of 557579618 is about 823.0678349017.

The spelling of 557579618 in words is "five hundred fifty-seven million, five hundred seventy-nine thousand, six hundred eighteen".