55163050220 has 12 divisors (see below), whose sum is σ = 115842405504. Its totient is φ = 22065220080.

The previous prime is 55163050177. The next prime is 55163050307. The reversal of 55163050220 is 2205036155.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1379076236 + ... + 1379076275.

It is an arithmetic number, because the mean of its divisors is an integer number (9653533792).

Almost surely, 2^55163050220 is an apocalyptic number.

It is an amenable number.

55163050220 is an abundant number, since it is smaller than the sum of its proper divisors (60679355284).

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

55163050220 is a wasteful number, since it uses less digits than its factorization.

55163050220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758152520 (or 2758152518 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 55163050220 its reverse (2205036155), we get a palindrome (57368086375).

The spelling of 55163050220 in words is "fifty-five billion, one hundred sixty-three million, fifty thousand, two hundred twenty".