557991100 has 36 divisors (see below), whose sum is σ = 1215180904. Its totient is φ = 222396480.

The previous prime is 557991089. The next prime is 557991101. The reversal of 557991100 is 1199755.

It is a happy number.

It is a super-2 number, since 2×557991100² = 622708135358420000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 557991100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557991101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18442 + ... + 38158.

Almost surely, 2^557991100 is an apocalyptic number.

557991100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

557991100 is an abundant number, since it is smaller than the sum of its proper divisors (657189804).

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

557991100 is a wasteful number, since it uses less digits than its factorization.

557991100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20014 (or 20007 counting only the distinct ones).

The product of its (nonzero) digits is 14175, while the sum is 37.

The square root of 557991100 is about 23621.8352377625. The cubic root of 557991100 is about 823.2702540180.

The spelling of 557991100 in words is "five hundred fifty-seven million, nine hundred ninety-one thousand, one hundred".