555564990 has 32 divisors (see below), whose sum is σ = 1369395360. Its totient is φ = 144146304.

The previous prime is 555564983. The next prime is 555564991. The reversal of 555564990 is 99465555.

It is a super-2 number, since 2×555564990² = 617304916227400200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555564991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249145 + ... + 251364.

It is an arithmetic number, because the mean of its divisors is an integer number (42793605).

Almost surely, 2^555564990 is an apocalyptic number.

555564990 is an abundant number, since it is smaller than the sum of its proper divisors (813830370).

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

555564990 is a wasteful number, since it uses less digits than its factorization.

555564990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500556.

The product of its (nonzero) digits is 1215000, while the sum is 48.

The square root of 555564990 is about 23570.4261734912. The cubic root of 555564990 is about 822.0753448853.

The spelling of 555564990 in words is "five hundred fifty-five million, five hundred sixty-four thousand, nine hundred ninety".