2155566255 has 16 divisors (see below), whose sum is σ = 3651783264. Its totient is φ = 1082009600.

The previous prime is 2155566247. The next prime is 2155566331. The reversal of 2155566255 is 5526655512.

2155566255 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2155566255 - 2³ = 2155566247 is a prime.

It is a congruent number.

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, 4226346 + ... + 4226855.

It is an arithmetic number, because the mean of its divisors is an integer number (228236454).

Almost surely, 2^2155566255 is an apocalyptic number.

2155566255 is a deficient number, since it is larger than the sum of its proper divisors (1496217009).

2155566255 is a wasteful number, since it uses less digits than its factorization.

2155566255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8453226.

The product of its digits is 450000, while the sum is 42.

The square root of 2155566255 is about 46428.0761501056. The cubic root of 2155566255 is about 1291.7757438975.

The spelling of 2155566255 in words is "two billion, one hundred fifty-five million, five hundred sixty-six thousand, two hundred fifty-five".