55537992224 has 96 divisors (see below), whose sum is σ = 129704125824. Its totient is φ = 23076218880.

The previous prime is 55537992187. The next prime is 55537992269. The reversal of 55537992224 is 42229973555.

It is a Cunningham number, because it is equal to 235665²-1.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412412 + ... + 530244.

It is an arithmetic number, because the mean of its divisors is an integer number (1351084644).

Almost surely, 2^55537992224 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 55537992224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64852062912).

55537992224 is an abundant number, since it is smaller than the sum of its proper divisors (74166133600).

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

55537992224 is a wasteful number, since it uses less digits than its factorization.

55537992224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117970 (or 117962 counting only the distinct ones).

The product of its digits is 6804000, while the sum is 53.

The spelling of 55537992224 in words is "fifty-five billion, five hundred thirty-seven million, nine hundred ninety-two thousand, two hundred twenty-four".