22531133 has 4 divisors (see below), whose sum is σ = 22549440. Its totient is φ = 22512828.

The previous prime is 22531129. The next prime is 22531153. The reversal of 22531133 is 33113522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22531133 - 2² = 22531129 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22531153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7163 + ... + 9816.

It is an arithmetic number, because the mean of its divisors is an integer number (5637360).

Almost surely, 2^22531133 is an apocalyptic number.

It is an amenable number.

22531133 is a deficient number, since it is larger than the sum of its proper divisors (18307).

22531133 is a wasteful number, since it uses less digits than its factorization.

22531133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18306.

The product of its digits is 540, while the sum is 20.

The square root of 22531133 is about 4746.6970621686. The cubic root of 22531133 is about 282.4409587634.

Adding to 22531133 its reverse (33113522), we get a palindrome (55644655).

The spelling of 22531133 in words is "twenty-two million, five hundred thirty-one thousand, one hundred thirty-three".