22253181 has 8 divisors (see below), whose sum is σ = 29693184. Its totient is φ = 14824320.

The previous prime is 22253177. The next prime is 22253183. The reversal of 22253181 is 18135222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22253181 - 2² = 22253177 is a prime.

It is a super-2 number, since 2×22253181² = 990408129237522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22253183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4941 + ... + 8301.

It is an arithmetic number, because the mean of its divisors is an integer number (3711648).

Almost surely, 2^22253181 is an apocalyptic number.

22253181 is the 2984-th centered pentagonal number.

It is an amenable number.

22253181 is a deficient number, since it is larger than the sum of its proper divisors (7440003).

22253181 is a wasteful number, since it uses less digits than its factorization.

22253181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5571.

The product of its digits is 960, while the sum is 24.

The square root of 22253181 is about 4717.3277393033. The cubic root of 22253181 is about 281.2747194076.

The spelling of 22253181 in words is "twenty-two million, two hundred fifty-three thousand, one hundred eighty-one".