22531245 has 32 divisors (see below), whose sum is σ = 41402880. Its totient is φ = 10347840.

The previous prime is 22531241. The next prime is 22531253. The reversal of 22531245 is 54213522.

It is not a de Polignac number, because 22531245 - 2² = 22531241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22531241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 459 + ... + 6728.

It is an arithmetic number, because the mean of its divisors is an integer number (1293840).

Almost surely, 2^22531245 is an apocalyptic number.

It is an amenable number.

22531245 is a deficient number, since it is larger than the sum of its proper divisors (18871635).

22531245 is a wasteful number, since it uses less digits than its factorization.

22531245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7225.

The product of its digits is 2400, while the sum is 24.

The square root of 22531245 is about 4746.7088598312. The cubic root of 22531245 is about 282.4414267578.

Adding to 22531245 its reverse (54213522), we get a palindrome (76744767).

The spelling of 22531245 in words is "twenty-two million, five hundred thirty-one thousand, two hundred forty-five".