2215155 has 16 divisors (see below), whose sum is σ = 3605760. Its totient is φ = 1160928.

The previous prime is 2215141. The next prime is 2215159. The reversal of 2215155 is 5515122.

It is not a de Polignac number, because 2215155 - 2⁶ = 2215091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2215159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 367 + ... + 2136.

It is an arithmetic number, because the mean of its divisors is an integer number (225360).

2^2215155 is an apocalyptic number.

2215155 is a deficient number, since it is larger than the sum of its proper divisors (1390605).

2215155 is a wasteful number, since it uses less digits than its factorization.

2215155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570.

The product of its digits is 500, while the sum is 21.

The square root of 2215155 is about 1488.3396789712. The cubic root of 2215155 is about 130.3571049335.

The spelling of 2215155 in words is "two million, two hundred fifteen thousand, one hundred fifty-five".