557806220 has 12 divisors (see below), whose sum is σ = 1171393104. Its totient is φ = 223122480.

The previous prime is 557806217. The next prime is 557806229. The reversal of 557806220 is 22608755.

557806220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×557806220² = 622295558141376800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (557806229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13945136 + ... + 13945175.

It is an arithmetic number, because the mean of its divisors is an integer number (97616092).

Almost surely, 2^557806220 is an apocalyptic number.

It is an amenable number.

557806220 is an abundant number, since it is smaller than the sum of its proper divisors (613586884).

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

557806220 is a wasteful number, since it uses less digits than its factorization.

557806220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27890320 (or 27890318 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 557806220 is about 23617.9215851014. The cubic root of 557806220 is about 823.1793188652.

The spelling of 557806220 in words is "five hundred fifty-seven million, eight hundred six thousand, two hundred twenty".