22005317 has 2 divisors, whose sum is σ = 22005318. Its totient is φ = 22005316.

The previous prime is 22005311. The next prime is 22005331. The reversal of 22005317 is 71350022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18671041 + 3334276 = 4321^2 + 1826^2 .

It is a cyclic number.

It is not a de Polignac number, because 22005317 - 2¹⁴ = 21988933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22005311) 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, 11002658 + 11002659.

It is an arithmetic number, because the mean of its divisors is an integer number (11002659).

Almost surely, 2^22005317 is an apocalyptic number.

It is an amenable number.

22005317 is a deficient number, since it is larger than the sum of its proper divisors (1).

22005317 is an equidigital number, since it uses as much as digits as its factorization.

22005317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 22005317 is about 4690.9825196860. The cubic root of 22005317 is about 280.2265046459.

Adding to 22005317 its reverse (71350022), we get a palindrome (93355339).

It can be divided in two parts, 22005 and 317, that added together give a palindrome (22322).

The spelling of 22005317 in words is "twenty-two million, five thousand, three hundred seventeen".