55280217120 has 48 divisors (see below), whose sum is σ = 174132685440. Its totient is φ = 14741391104.

The previous prime is 55280217059. The next prime is 55280217121. The reversal of 55280217120 is 2171208255.

55280217120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (55280217121) 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, 57583080 + ... + 57584039.

It is an arithmetic number, because the mean of its divisors is an integer number (3627764280).

Almost surely, 2^55280217120 is an apocalyptic number.

It is an amenable number.

55280217120 is an abundant number, since it is smaller than the sum of its proper divisors (118852468320).

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

55280217120 is a wasteful number, since it uses less digits than its factorization.

55280217120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115167137 (or 115167129 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 33.

The spelling of 55280217120 in words is "fifty-five billion, two hundred eighty million, two hundred seventeen thousand, one hundred twenty".