22809533 has 2 divisors, whose sum is σ = 22809534. Its totient is φ = 22809532.

The previous prime is 22809509. The next prime is 22809539. The reversal of 22809533 is 33590822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14760964 + 8048569 = 3842^2 + 2837^2 .

It is a cyclic number.

It is not a de Polignac number, because 22809533 - 2⁸ = 22809277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22809533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22809539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11404766 + 11404767.

It is an arithmetic number, because the mean of its divisors is an integer number (11404767).

Almost surely, 2^22809533 is an apocalyptic number.

It is an amenable number.

22809533 is a deficient number, since it is larger than the sum of its proper divisors (1).

22809533 is an equidigital number, since it uses as much as digits as its factorization.

22809533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 22809533 is about 4775.9326837802. The cubic root of 22809533 is about 283.5995024337.

The spelling of 22809533 in words is "twenty-two million, eight hundred nine thousand, five hundred thirty-three".