55205532228 has 144 divisors (see below), whose sum is σ = 163419725952. Its totient is φ = 14196864000.

The previous prime is 55205532227. The next prime is 55205532269. The reversal of 55205532228 is 82223550255.

It is not an unprimeable number, because it can be changed into a prime (55205532227) 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, 999676 + ... + 1053452.

It is an arithmetic number, because the mean of its divisors is an integer number (1134859208).

Almost surely, 2^55205532228 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 55205532228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81709862976).

55205532228 is an abundant number, since it is smaller than the sum of its proper divisors (108214193724).

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

55205532228 is a wasteful number, since it uses less digits than its factorization.

55205532228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53914 (or 53901 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 39.

The spelling of 55205532228 in words is "fifty-five billion, two hundred five million, five hundred thirty-two thousand, two hundred twenty-eight".