557856879 has 8 divisors (see below), whose sum is σ = 743922480. Its totient is φ = 371847936.

The previous prime is 557856863. The next prime is 557856883. The reversal of 557856879 is 978658755.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 557856879 - 2⁴ = 557856863 is a prime.

It is a super-2 number, since 2×557856879² = 622408594895241282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557856809) 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, 22017 + ... + 40005.

It is an arithmetic number, because the mean of its divisors is an integer number (92990310).

Almost surely, 2^557856879 is an apocalyptic number.

557856879 is a deficient number, since it is larger than the sum of its proper divisors (186065601).

557856879 is a wasteful number, since it uses less digits than its factorization.

557856879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28329.

The product of its digits is 21168000, while the sum is 60.

The square root of 557856879 is about 23618.9940302291. The cubic root of 557856879 is about 823.2042380201.

The spelling of 557856879 in words is "five hundred fifty-seven million, eight hundred fifty-six thousand, eight hundred seventy-nine".