55112880 has 40 divisors (see below), whose sum is σ = 170850672. Its totient is φ = 14696704.

The previous prime is 55112873. The next prime is 55112881. The reversal of 55112880 is 8821155.

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

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (55112881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114579 + ... + 115058.

Almost surely, 2^55112880 is an apocalyptic number.

It is an amenable number.

55112880 is an abundant number, since it is smaller than the sum of its proper divisors (115737792).

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

55112880 is a wasteful number, since it uses less digits than its factorization.

55112880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229653 (or 229647 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 55112880 is about 7423.8049543344. The cubic root of 55112880 is about 380.5552363370. Note that the first 3 decimals are identical.

It can be divided in two parts, 551 and 12880, that added together give a palindrome (13431).

The spelling of 55112880 in words is "fifty-five million, one hundred twelve thousand, eight hundred eighty".