2216555 has 16 divisors (see below), whose sum is σ = 2930688. Its totient is φ = 1596000.

The previous prime is 2216551. The next prime is 2216563. The reversal of 2216555 is 5556122.

2216555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2216555 - 2² = 2216551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2216551) 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 15 ways as a sum of consecutive naturals, for example, 10400 + ... + 10610.

It is an arithmetic number, because the mean of its divisors is an integer number (183168).

2^2216555 is an apocalyptic number.

2216555 is a deficient number, since it is larger than the sum of its proper divisors (714133).

2216555 is a wasteful number, since it uses less digits than its factorization.

2216555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418.

The product of its digits is 3000, while the sum is 26.

The square root of 2216555 is about 1488.8099274253. The cubic root of 2216555 is about 130.3845614791.

It can be divided in two parts, 221 and 6555, that added together give a palindrome (6776).

The spelling of 2216555 in words is "two million, two hundred sixteen thousand, five hundred fifty-five".