556290988 has 24 divisors (see below), whose sum is σ = 1070383104. Its totient is φ = 250866000.

The previous prime is 556290971. The next prime is 556291003. The reversal of 556290988 is 889092655.

It is a super-2 number, since 2×556290988² = 618919326660032288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44188 + ... + 55363.

It is an arithmetic number, because the mean of its divisors is an integer number (44599296).

Almost surely, 2^556290988 is an apocalyptic number.

It is an amenable number.

556290988 is a deficient number, since it is larger than the sum of its proper divisors (514092116).

556290988 is a wasteful number, since it uses less digits than its factorization.

556290988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99693 (or 99691 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 52.

The square root of 556290988 is about 23585.8217579969. The cubic root of 556290988 is about 822.4332779707.

The spelling of 556290988 in words is "five hundred fifty-six million, two hundred ninety thousand, nine hundred eighty-eight".