2155234255 has 4 divisors (see below), whose sum is σ = 2586281112. Its totient is φ = 1724187400.

The previous prime is 2155234243. The next prime is 2155234271. The reversal of 2155234255 is 5524325512.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2155234255 - 2⁵ = 2155234223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2155234255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215523421 + ... + 215523430.

It is an arithmetic number, because the mean of its divisors is an integer number (646570278).

Almost surely, 2^2155234255 is an apocalyptic number.

2155234255 is a deficient number, since it is larger than the sum of its proper divisors (431046857).

2155234255 is an equidigital number, since it uses as much as digits as its factorization.

2155234255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431046856.

The product of its digits is 60000, while the sum is 34.

The square root of 2155234255 is about 46424.5005896671. The cubic root of 2155234255 is about 1291.7094207885.

Adding to 2155234255 its reverse (5524325512), we get a palindrome (7679559767).

The spelling of 2155234255 in words is "two billion, one hundred fifty-five million, two hundred thirty-four thousand, two hundred fifty-five".