555555984 has 80 divisors (see below), whose sum is σ = 1511903232. Its totient is φ = 175441024.

The previous prime is 555555967. The next prime is 555556021. The reversal of 555555984 is 489555555.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 115777 + ... + 120479.

Almost surely, 2^555555984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 555555984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (755951616).

555555984 is an abundant number, since it is smaller than the sum of its proper divisors (956347248).

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

555555984 is a wasteful number, since it uses less digits than its factorization.

555555984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4844 (or 4838 counting only the distinct ones).

The product of its digits is 4500000, while the sum is 51.

The square root of 555555984 is about 23570.2351282290. The cubic root of 555555984 is about 822.0709027704.

The spelling of 555555984 in words is "five hundred fifty-five million, five hundred fifty-five thousand, nine hundred eighty-four".