22253217 has 16 divisors (see below), whose sum is σ = 34058112. Its totient is φ = 12660480.

The previous prime is 22253197. The next prime is 22253239. The reversal of 22253217 is 71235222.

It is a happy number.

It is not a de Polignac number, because 22253217 - 2¹² = 22249121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22253267) 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, 2863 + ... + 7259.

It is an arithmetic number, because the mean of its divisors is an integer number (2128632).

Almost surely, 2^22253217 is an apocalyptic number.

It is an amenable number.

22253217 is a deficient number, since it is larger than the sum of its proper divisors (11804895).

22253217 is a wasteful number, since it uses less digits than its factorization.

22253217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4648.

The product of its digits is 1680, while the sum is 24.

The square root of 22253217 is about 4717.3315550213. The cubic root of 22253217 is about 281.2748710845.

Adding to 22253217 its reverse (71235222), we get a palindrome (93488439).

The spelling of 22253217 in words is "twenty-two million, two hundred fifty-three thousand, two hundred seventeen".