22552216 has 16 divisors (see below), whose sum is σ = 42368040. Its totient is φ = 11254080.

The previous prime is 22552199. The next prime is 22552237. The reversal of 22552216 is 61225522.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2100 + ... + 7036.

Almost surely, 2^22552216 is an apocalyptic number.

It is an amenable number.

22552216 is a deficient number, since it is larger than the sum of its proper divisors (19815824).

22552216 is a wasteful number, since it uses less digits than its factorization.

22552216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5514 (or 5510 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 22552216 is about 4748.9173503021. The cubic root of 22552216 is about 282.5290272207.

Adding to 22552216 its reverse (61225522), we get a palindrome (83777738).

It can be divided in two parts, 225 and 52216, that added together give a square (52441 = 229²).

The spelling of 22552216 in words is "twenty-two million, five hundred fifty-two thousand, two hundred sixteen".