55123880 has 32 divisors (see below), whose sum is σ = 141747840. Its totient is φ = 18899520.

The previous prime is 55123879. The next prime is 55123907. The reversal of 55123880 is 8832155.

It is a happy number.

55123880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98156 + ... + 98715.

It is an arithmetic number, because the mean of its divisors is an integer number (4429620).

Almost surely, 2^55123880 is an apocalyptic number.

It is an amenable number.

55123880 is an abundant number, since it is smaller than the sum of its proper divisors (86623960).

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

55123880 is a wasteful number, since it uses less digits than its factorization.

55123880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196889 (or 196885 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 55123880 is about 7424.5457773523. The cubic root of 55123880 is about 380.5805530393.

The spelling of 55123880 in words is "fifty-five million, one hundred twenty-three thousand, eight hundred eighty".