2215253155 has 4 divisors (see below), whose sum is σ = 2658303792. Its totient is φ = 1772202520.

The previous prime is 2215253129. The next prime is 2215253167. The reversal of 2215253155 is 5513525122.

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

It is not a de Polignac number, because 2215253155 - 2⁵ = 2215253123 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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, 221525311 + ... + 221525320.

It is an arithmetic number, because the mean of its divisors is an integer number (664575948).

Almost surely, 2^2215253155 is an apocalyptic number.

2215253155 is a deficient number, since it is larger than the sum of its proper divisors (443050637).

2215253155 is an equidigital number, since it uses as much as digits as its factorization.

2215253155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443050636.

The product of its digits is 15000, while the sum is 31.

The square root of 2215253155 is about 47066.4759143916. The cubic root of 2215253155 is about 1303.5903030853.

Adding to 2215253155 its reverse (5513525122), we get a palindrome (7728778277).

The spelling of 2215253155 in words is "two billion, two hundred fifteen million, two hundred fifty-three thousand, one hundred fifty-five".