9055115550 has 144 divisors (see below), whose sum is σ = 27170292240. Its totient is φ = 2228912640.

The previous prime is 9055115543. The next prime is 9055115611. The reversal of 9055115550 is 555115509.

It is a happy number.

9055115550 is a `hidden beast` number, since 9 + 0 + 551 + 1 + 55 + 50 = 666.

9055115550 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 71 ways as a sum of consecutive naturals, for example, 129286 + ... + 186614.

It is an arithmetic number, because the mean of its divisors is an integer number (188682585).

Almost surely, 2^9055115550 is an apocalyptic number.

9055115550 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9055115550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13585146120).

9055115550 is an abundant number, since it is smaller than the sum of its proper divisors (18115176690).

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

9055115550 is a wasteful number, since it uses less digits than its factorization.

9055115550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57369 (or 57352 counting only the distinct ones).

The product of its (nonzero) digits is 28125, while the sum is 36.

The square root of 9055115550 is about 95158.3708876944. The cubic root of 9055115550 is about 2084.3212945425.

The spelling of 9055115550 in words is "nine billion, fifty-five million, one hundred fifteen thousand, five hundred fifty".