5551538832 has 120 divisors (see below), whose sum is σ = 17771255424. Its totient is φ = 1584801792.

The previous prime is 5551538789. The next prime is 5551538843. The reversal of 5551538832 is 2388351555.

5551538832 is a `hidden beast` number, since 55 + 515 + 3 + 8 + 83 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2289973 + ... + 2292395.

Almost surely, 2^5551538832 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 5551538832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8885627712).

5551538832 is an abundant number, since it is smaller than the sum of its proper divisors (12219716592).

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

5551538832 is a wasteful number, since it uses less digits than its factorization.

5551538832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4717 (or 4708 counting only the distinct ones).

The product of its digits is 720000, while the sum is 45.

The square root of 5551538832 is about 74508.6493771025. The cubic root of 5551538832 is about 1770.6706718223.

The spelling of 5551538832 in words is "five billion, five hundred fifty-one million, five hundred thirty-eight thousand, eight hundred thirty-two".