22536427 has 2 divisors, whose sum is σ = 22536428. Its totient is φ = 22536426.

The previous prime is 22536421. The next prime is 22536431. The reversal of 22536427 is 72463522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22536427 - 2³ = 22536419 is a prime.

It is not a weakly prime, because it can be changed into another prime (22536421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11268213 + 11268214.

It is an arithmetic number, because the mean of its divisors is an integer number (11268214).

Almost surely, 2^22536427 is an apocalyptic number.

22536427 is a deficient number, since it is larger than the sum of its proper divisors (1).

22536427 is an equidigital number, since it uses as much as digits as its factorization.

22536427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 31.

The square root of 22536427 is about 4747.2546803389. The cubic root of 22536427 is about 282.4630781621.

Adding to 22536427 its reverse (72463522), we get a palindrome (94999949).

The spelling of 22536427 in words is "twenty-two million, five hundred thirty-six thousand, four hundred twenty-seven".