2216515 has 24 divisors (see below), whose sum is σ = 3160080. Its totient is φ = 1487808.

The previous prime is 2216479. The next prime is 2216519. The reversal of 2216515 is 5156122.

It is not a de Polignac number, because 2216515 - 2⁷ = 2216387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2216519) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20281 + ... + 20389.

It is an arithmetic number, because the mean of its divisors is an integer number (131670).

2^2216515 is an apocalyptic number.

2216515 is a deficient number, since it is larger than the sum of its proper divisors (943565).

2216515 is a wasteful number, since it uses less digits than its factorization.

2216515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 204 counting only the distinct ones).

The product of its digits is 600, while the sum is 22.

The square root of 2216515 is about 1488.7964938164. The cubic root of 2216515 is about 130.3837771668.

The spelling of 2216515 in words is "two million, two hundred sixteen thousand, five hundred fifteen".