55110188 has 48 divisors (see below), whose sum is σ = 114745344. Its totient is φ = 22662720.

The previous prime is 55110173. The next prime is 55110199. The reversal of 55110188 is 88101155.

It is a self number, because there is not a number n which added to its sum of digits gives 55110188.

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, 149981 + ... + 150347.

It is an arithmetic number, because the mean of its divisors is an integer number (2390528).

Almost surely, 2^55110188 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 55110188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57372672).

55110188 is an abundant number, since it is smaller than the sum of its proper divisors (59635156).

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

55110188 is a wasteful number, since it uses less digits than its factorization.

55110188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 580 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 29.

The square root of 55110188 is about 7423.6236434776. The cubic root of 55110188 is about 380.5490401365.

The spelling of 55110188 in words is "fifty-five million, one hundred ten thousand, one hundred eighty-eight".