55102561228 has 72 divisors (see below), whose sum is σ = 116930620800. Its totient is φ = 22555948800.

The previous prime is 55102561223. The next prime is 55102561231. The reversal of 55102561228 is 82216520155.

It is not an unprimeable number, because it can be changed into a prime (55102561223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151173 + ... + 364771.

It is an arithmetic number, because the mean of its divisors is an integer number (1624036400).

Almost surely, 2^55102561228 is an apocalyptic number.

It is an amenable number.

55102561228 is an abundant number, since it is smaller than the sum of its proper divisors (61828059572).

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

55102561228 is a wasteful number, since it uses less digits than its factorization.

55102561228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213679 (or 213666 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 37.

The spelling of 55102561228 in words is "fifty-five billion, one hundred two million, five hundred sixty-one thousand, two hundred twenty-eight".