22005937 has 2 divisors, whose sum is σ = 22005938. Its totient is φ = 22005936.

The previous prime is 22005913. The next prime is 22005943. The reversal of 22005937 is 73950022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21893041 + 112896 = 4679^2 + 336^2 .

It is a cyclic number.

It is not a de Polignac number, because 22005937 - 2¹⁵ = 21973169 is a prime.

It is a super-2 number, since 2×22005937² = 968522526495938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22005947) 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, 11002968 + 11002969.

It is an arithmetic number, because the mean of its divisors is an integer number (11002969).

Almost surely, 2^22005937 is an apocalyptic number.

It is an amenable number.

22005937 is a deficient number, since it is larger than the sum of its proper divisors (1).

22005937 is an equidigital number, since it uses as much as digits as its factorization.

22005937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 22005937 is about 4691.0486034574. The cubic root of 22005937 is about 280.2291364160.

Adding to 22005937 its reverse (73950022), we get a palindrome (95955959).

The spelling of 22005937 in words is "twenty-two million, five thousand, nine hundred thirty-seven".