55109088 has 72 divisors (see below), whose sum is σ = 157739400. Its totient is φ = 18249984.

The previous prime is 55109071. The next prime is 55109099. The reversal of 55109088 is 88090155.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51018 + ... + 52086.

It is an arithmetic number, because the mean of its divisors is an integer number (2190825).

Almost surely, 2^55109088 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 55109088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78869700).

55109088 is an abundant number, since it is smaller than the sum of its proper divisors (102630312).

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

55109088 is a wasteful number, since it uses less digits than its factorization.

55109088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264 (or 1253 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The square root of 55109088 is about 7423.5495553003. The cubic root of 55109088 is about 380.5465081985.

The spelling of 55109088 in words is "fifty-five million, one hundred nine thousand, eighty-eight".