55599984 has 90 divisors (see below), whose sum is σ = 171088008. Its totient is φ = 16843200.

The previous prime is 55599967. The next prime is 55599997. The reversal of 55599984 is 48999555.

55599984 is a `hidden beast` number, since 5 + 559 + 9 + 9 + 84 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 55599984.

It is a congruent number.

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 17 ways as a sum of consecutive naturals, for example, 15829 + ... + 19019.

Almost surely, 2^55599984 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 55599984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85544004).

55599984 is an abundant number, since it is smaller than the sum of its proper divisors (115488024).

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

55599984 is a wasteful number, since it uses less digits than its factorization.

55599984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3227 (or 3207 counting only the distinct ones).

The product of its digits is 2916000, while the sum is 54.

The square root of 55599984 is about 7456.5396800393. The cubic root of 55599984 is about 381.6731028283.

The spelling of 55599984 in words is "fifty-five million, five hundred ninety-nine thousand, nine hundred eighty-four".