5555021988 has 24 divisors (see below), whose sum is σ = 13060666080. Its totient is φ = 1837538560.

The previous prime is 5555021959. The next prime is 5555022013. The reversal of 5555021988 is 8891205555.

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, 1765293 + ... + 1768436.

It is an arithmetic number, because the mean of its divisors is an integer number (544194420).

Almost surely, 2^5555021988 is an apocalyptic number.

It is an amenable number.

5555021988 is an abundant number, since it is smaller than the sum of its proper divisors (7505644092).

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

5555021988 is a wasteful number, since it uses less digits than its factorization.

5555021988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3533867 (or 3533865 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 48.

The square root of 5555021988 is about 74532.0198840740. The cubic root of 5555021988 is about 1771.0409134755.

The spelling of 5555021988 in words is "five billion, five hundred fifty-five million, twenty-one thousand, nine hundred eighty-eight".