2151155255 has 24 divisors (see below), whose sum is σ = 2717991936. Its totient is φ = 1633794240.

The previous prime is 2151155213. The next prime is 2151155257. The reversal of 2151155255 is 5525511512.

It is not a de Polignac number, because 2151155255 - 2²² = 2146960951 is a prime.

It is a super-2 number, since 2×2151155255² = 9254937862228230050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151155257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 250442 + ... + 258888.

It is an arithmetic number, because the mean of its divisors is an integer number (113249664).

Almost surely, 2^2151155255 is an apocalyptic number.

2151155255 is a deficient number, since it is larger than the sum of its proper divisors (566836681).

2151155255 is an equidigital number, since it uses as much as digits as its factorization.

2151155255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8567 (or 8536 counting only the distinct ones).

The product of its digits is 12500, while the sum is 32.

The square root of 2151155255 is about 46380.5482395368. The cubic root of 2151155255 is about 1290.8940090098.

Adding to 2151155255 its reverse (5525511512), we get a palindrome (7676666767).

The spelling of 2151155255 in words is "two billion, one hundred fifty-one million, one hundred fifty-five thousand, two hundred fifty-five".