55088880 has 240 divisors, whose sum is σ = 215319552. Its totient is φ = 11404800.

The previous prime is 55088867. The next prime is 55088881. The reversal of 55088880 is 8888055.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55088881) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 203145 + ... + 203415.

Almost surely, 2^55088880 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 55088880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107659776).

55088880 is an abundant number, since it is smaller than the sum of its proper divisors (160230672).

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

55088880 is a wasteful number, since it uses less digits than its factorization.

55088880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 42.

The square root of 55088880 is about 7422.1883565428. The cubic root of 55088880 is about 380.4999882005.

The spelling of 55088880 in words is "fifty-five million, eighty-eight thousand, eight hundred eighty".