22531045 has 8 divisors (see below), whose sum is σ = 27134496. Its totient is φ = 17960016.

The previous prime is 22531009. The next prime is 22531049. The reversal of 22531045 is 54013522.

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

It is a cyclic number.

It is not a de Polignac number, because 22531045 - 2⁷ = 22530917 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 (22531049) 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, 6547 + ... + 9376.

It is an arithmetic number, because the mean of its divisors is an integer number (3391812).

Almost surely, 2^22531045 is an apocalyptic number.

It is an amenable number.

22531045 is a deficient number, since it is larger than the sum of its proper divisors (4603451).

22531045 is a wasteful number, since it uses less digits than its factorization.

22531045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16211.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 22531045 is about 4746.6877925560. The cubic root of 22531045 is about 282.4405910524.

Adding to 22531045 its reverse (54013522), we get a palindrome (76544567).

The spelling of 22531045 in words is "twenty-two million, five hundred thirty-one thousand, forty-five".