22563437 has 24 divisors (see below), whose sum is σ = 27035064. Its totient is φ = 18653184.

The previous prime is 22563419. The next prime is 22563449. The reversal of 22563437 is 73436522.

It can be written as a sum of positive squares in 4 ways, for example, as 978121 + 21585316 = 989^2 + 4646^2 .

It is not a de Polignac number, because 22563437 - 2⁸ = 22563181 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 (22563137) 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, 116813 + ... + 117005.

It is an arithmetic number, because the mean of its divisors is an integer number (1126461).

Almost surely, 2^22563437 is an apocalyptic number.

It is an amenable number.

22563437 is a deficient number, since it is larger than the sum of its proper divisors (4471627).

22563437 is a wasteful number, since it uses less digits than its factorization.

22563437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269 (or 246 counting only the distinct ones).

The product of its digits is 30240, while the sum is 32.

The square root of 22563437 is about 4750.0986305549. The cubic root of 22563437 is about 282.5758774957.

Adding to 22563437 its reverse (73436522), we get a palindrome (95999959).

The spelling of 22563437 in words is "twenty-two million, five hundred sixty-three thousand, four hundred thirty-seven".