22253247 has 12 divisors (see below), whose sum is σ = 32584864. Its totient is φ = 14631840.

The previous prime is 22253239. The next prime is 22253261. The reversal of 22253247 is 74235222.

It is not a de Polignac number, because 22253247 - 2³ = 22253239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22253247.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 16279 + ... + 17592.

Almost surely, 2^22253247 is an apocalyptic number.

22253247 is a deficient number, since it is larger than the sum of its proper divisors (10331617).

22253247 is a wasteful number, since it uses less digits than its factorization.

22253247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33950 (or 33947 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 22253247 is about 4717.3347347840. The cubic root of 22253247 is about 281.2749974819.

Adding to 22253247 its reverse (74235222), we get a palindrome (96488469).

It can be divided in two parts, 22253 and 247, that added together give a square (22500 = 150²).

The spelling of 22253247 in words is "twenty-two million, two hundred fifty-three thousand, two hundred forty-seven".