557407979 has 4 divisors (see below), whose sum is σ = 563671080. Its totient is φ = 551144880.

The previous prime is 557407919. The next prime is 557408017. The reversal of 557407979 is 979704755.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 557407979 - 2²⁴ = 540630763 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 557407979.

It is not an unprimeable number, because it can be changed into a prime (557407909) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3131417 + ... + 3131594.

It is an arithmetic number, because the mean of its divisors is an integer number (140917770).

Almost surely, 2^557407979 is an apocalyptic number.

557407979 is a deficient number, since it is larger than the sum of its proper divisors (6263101).

557407979 is an equidigital number, since it uses as much as digits as its factorization.

557407979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6263100.

The product of its (nonzero) digits is 2778300, while the sum is 53.

The square root of 557407979 is about 23609.4891727881. The cubic root of 557407979 is about 822.9833716049.

The spelling of 557407979 in words is "five hundred fifty-seven million, four hundred seven thousand, nine hundred seventy-nine".