22253231 has 48 divisors (see below), whose sum is σ = 31460352. Its totient is φ = 15301440.

The previous prime is 22253197. The next prime is 22253239. The reversal of 22253231 is 13235222.

It is not a de Polignac number, because 22253231 - 2²² = 18058927 is a prime.

It is a super-2 number, since 2×22253231² = 990412579878722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22253239) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 473450 + ... + 473496.

It is an arithmetic number, because the mean of its divisors is an integer number (655424).

Almost surely, 2^22253231 is an apocalyptic number.

22253231 is a deficient number, since it is larger than the sum of its proper divisors (9207121).

22253231 is a wasteful number, since it uses less digits than its factorization.

22253231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 121 counting only the distinct ones).

The product of its digits is 720, while the sum is 20.

The square root of 22253231 is about 4717.3330389109. Note that the first 3 decimals coincide. The cubic root of 22253231 is about 281.2749300700.

Adding to 22253231 its reverse (13235222), we get a palindrome (35488453).

Subtracting from 22253231 its reverse (13235222), we obtain a square (9018009 = 3003²).

The spelling of 22253231 in words is "twenty-two million, two hundred fifty-three thousand, two hundred thirty-one".