55256880 has 160 divisors (see below), whose sum is σ = 202272768. Its totient is φ = 12211200.

The previous prime is 55256869. The next prime is 55256881. The reversal of 55256880 is 8865255.

It is not an unprimeable number, because it can be changed into a prime (55256881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51550 + ... + 52610.

Almost surely, 2^55256880 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 55256880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101136384).

55256880 is an abundant number, since it is smaller than the sum of its proper divisors (147015888).

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

55256880 is a wasteful number, since it uses less digits than its factorization.

55256880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115 (or 1109 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 39.

The square root of 55256880 is about 7433.4971581349. The cubic root of 55256880 is about 380.8863887871.

The spelling of 55256880 in words is "fifty-five million, two hundred fifty-six thousand, eight hundred eighty".