22656553 has 2 divisors, whose sum is σ = 22656554. Its totient is φ = 22656552.

The previous prime is 22656551. The next prime is 22656589. The reversal of 22656553 is 35565622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21187609 + 1468944 = 4603^2 + 1212^2 .

It is a cyclic number.

It is not a de Polignac number, because 22656553 - 2¹ = 22656551 is a prime.

Together with 22656551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22656551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11328276 + 11328277.

It is an arithmetic number, because the mean of its divisors is an integer number (11328277).

Almost surely, 2^22656553 is an apocalyptic number.

It is an amenable number.

22656553 is a deficient number, since it is larger than the sum of its proper divisors (1).

22656553 is an equidigital number, since it uses as much as digits as its factorization.

22656553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54000, while the sum is 34.

The square root of 22656553 is about 4759.8900197379. The cubic root of 22656553 is about 282.9640604138.

The spelling of 22656553 in words is "twenty-two million, six hundred fifty-six thousand, five hundred fifty-three".