2155055112 has 64 divisors (see below), whose sum is σ = 6841449600. Its totient is φ = 615729600.

The previous prime is 2155055087. The next prime is 2155055129. The reversal of 2155055112 is 2115505512.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 711139 + ... + 714162.

It is an arithmetic number, because the mean of its divisors is an integer number (106897650).

Almost surely, 2^2155055112 is an apocalyptic number.

It is an amenable number.

2155055112 is an abundant number, since it is smaller than the sum of its proper divisors (4686394488).

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

2155055112 is a wasteful number, since it uses less digits than its factorization.

2155055112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425323 (or 1425313 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

The square root of 2155055112 is about 46422.5711480956. The cubic root of 2155055112 is about 1291.6736308488.

The spelling of 2155055112 in words is "two billion, one hundred fifty-five million, fifty-five thousand, one hundred twelve".