9055091220 has 144 divisors (see below), whose sum is σ = 29602863360. Its totient is φ = 2062077696.

The previous prime is 9055091197. The next prime is 9055091267. The reversal of 9055091220 is 221905509.

9055091220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 808821 + ... + 819939.

It is an arithmetic number, because the mean of its divisors is an integer number (205575440).

Almost surely, 2^9055091220 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 9055091220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14801431680).

9055091220 is an abundant number, since it is smaller than the sum of its proper divisors (20547772140).

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

9055091220 is a wasteful number, since it uses less digits than its factorization.

9055091220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11422 (or 11413 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 9055091220 is about 95158.2430480933. The cubic root of 9055091220 is about 2084.3194277678.

Adding to 9055091220 its reverse (221905509), we get a palindrome (9276996729).

The spelling of 9055091220 in words is "nine billion, fifty-five million, ninety-one thousand, two hundred twenty".