55055120 has 40 divisors (see below), whose sum is σ = 128950080. Its totient is φ = 21859200.

The previous prime is 55055111. The next prime is 55055167. The reversal of 55055120 is 2155055.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8645 + ... + 13595.

It is an arithmetic number, because the mean of its divisors is an integer number (3223752).

Almost surely, 2^55055120 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 55055120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64475040).

55055120 is an abundant number, since it is smaller than the sum of its proper divisors (73894960).

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

55055120 is a wasteful number, since it uses less digits than its factorization.

55055120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5103 (or 5097 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 55055120 is about 7419.9137461294. The cubic root of 55055120 is about 380.4222453205.

The spelling of 55055120 in words is "fifty-five million, fifty-five thousand, one hundred twenty".