557487220 has 12 divisors (see below), whose sum is σ = 1170723204. Its totient is φ = 222994880.

The previous prime is 557487211. The next prime is 557487233. The reversal of 557487220 is 22784755.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 80676324 + 476810896 = 8982^2 + 21836^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13937161 + ... + 13937200.

It is an arithmetic number, because the mean of its divisors is an integer number (97560267).

Almost surely, 2^557487220 is an apocalyptic number.

It is an amenable number.

557487220 is an abundant number, since it is smaller than the sum of its proper divisors (613235984).

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

557487220 is a wasteful number, since it uses less digits than its factorization.

557487220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27874370 (or 27874368 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 557487220 is about 23611.1672731358. The cubic root of 557487220 is about 823.0223681375.

The spelling of 557487220 in words is "five hundred fifty-seven million, four hundred eighty-seven thousand, two hundred twenty".