2216505 has 16 divisors (see below), whose sum is σ = 3582144. Its totient is φ = 1170240.

The previous prime is 2216479. The next prime is 2216519. The reversal of 2216505 is 5056122.

It is not a de Polignac number, because 2216505 - 2⁷ = 2216377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 915 + ... + 2295.

It is an arithmetic number, because the mean of its divisors is an integer number (223884).

2^2216505 is an apocalyptic number.

It is an amenable number.

2216505 is a deficient number, since it is larger than the sum of its proper divisors (1365639).

2216505 is a wasteful number, since it uses less digits than its factorization.

2216505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2216505 is about 1488.7931353952. The cubic root of 2216505 is about 130.3835810873.

The spelling of 2216505 in words is "two million, two hundred sixteen thousand, five hundred five".