2115455155 has 32 divisors (see below), whose sum is σ = 2924213760. Its totient is φ = 1452971520.

The previous prime is 2115455143. The next prime is 2115455171. The reversal of 2115455155 is 5515545112.

It is not a de Polignac number, because 2115455155 - 2⁹ = 2115454643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2115455155.

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 31 ways as a sum of consecutive naturals, for example, 349162 + ... + 355168.

It is an arithmetic number, because the mean of its divisors is an integer number (91381680).

Almost surely, 2^2115455155 is an apocalyptic number.

2115455155 is a deficient number, since it is larger than the sum of its proper divisors (808758605).

2115455155 is a wasteful number, since it uses less digits than its factorization.

2115455155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6379.

The product of its digits is 25000, while the sum is 34.

The square root of 2115455155 is about 45994.0773904641. The cubic root of 2115455155 is about 1283.7130053713.

The spelling of 2115455155 in words is "two billion, one hundred fifteen million, four hundred fifty-five thousand, one hundred fifty-five".