22533613 has 2 divisors, whose sum is σ = 22533614. Its totient is φ = 22533612.

The previous prime is 22533611. The next prime is 22533617. The reversal of 22533613 is 31633522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20043529 + 2490084 = 4477^2 + 1578^2 .

It is a cyclic number.

It is not a de Polignac number, because 22533613 - 2¹ = 22533611 is a prime.

Together with 22533611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22533611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11266806 + 11266807.

It is an arithmetic number, because the mean of its divisors is an integer number (11266807).

Almost surely, 2^22533613 is an apocalyptic number.

It is an amenable number.

22533613 is a deficient number, since it is larger than the sum of its proper divisors (1).

22533613 is an equidigital number, since it uses as much as digits as its factorization.

22533613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 25.

The square root of 22533613 is about 4746.9582892627. The cubic root of 22533613 is about 282.4513211344.

Subtracting 22533613 from its reverse (31633522), we obtain a palindrome (9099909).

The spelling of 22533613 in words is "twenty-two million, five hundred thirty-three thousand, six hundred thirteen".