22563243 has 24 divisors (see below), whose sum is σ = 34122816. Its totient is φ = 14352000.

The previous prime is 22563221. The next prime is 22563251. The reversal of 22563243 is 34236522.

22563243 is a `hidden beast` number, since 2 + 25 + 632 + 4 + 3 = 666.

It is not a de Polignac number, because 22563243 - 2¹⁴ = 22546859 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (22563263) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16693 + ... + 17993.

It is an arithmetic number, because the mean of its divisors is an integer number (1421784).

Almost surely, 2^22563243 is an apocalyptic number.

22563243 is a deficient number, since it is larger than the sum of its proper divisors (11559573).

22563243 is a wasteful number, since it uses less digits than its factorization.

22563243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395 (or 1392 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 22563243 is about 4750.0782098824. The cubic root of 22563243 is about 282.5750676327.

Adding to 22563243 its reverse (34236522), we get a palindrome (56799765).

The spelling of 22563243 in words is "twenty-two million, five hundred sixty-three thousand, two hundred forty-three".