2153550220 has 24 divisors (see below), whose sum is σ = 4644685584. Its totient is φ = 838138176.

The previous prime is 2153550187. The next prime is 2153550221. The reversal of 2153550220 is 220553512.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2153550221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1454362 + ... + 1455841.

It is an arithmetic number, because the mean of its divisors is an integer number (193528566).

Almost surely, 2^2153550220 is an apocalyptic number.

2153550220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2153550220 is an abundant number, since it is smaller than the sum of its proper divisors (2491135364).

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

2153550220 is a wasteful number, since it uses less digits than its factorization.

2153550220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2910249 (or 2910247 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 2153550220 is about 46406.3596934730. The cubic root of 2153550220 is about 1291.3728988718.

The spelling of 2153550220 in words is "two billion, one hundred fifty-three million, five hundred fifty thousand, two hundred twenty".