22045943 has 2 divisors, whose sum is σ = 22045944. Its totient is φ = 22045942.

The previous prime is 22045939. The next prime is 22045963. The reversal of 22045943 is 34954022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22045943 - 2² = 22045939 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22045963) 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, 11022971 + 11022972.

It is an arithmetic number, because the mean of its divisors is an integer number (11022972).

Almost surely, 2^22045943 is an apocalyptic number.

22045943 is a deficient number, since it is larger than the sum of its proper divisors (1).

22045943 is an equidigital number, since it uses as much as digits as its factorization.

22045943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 22045943 is about 4695.3107458399. The cubic root of 22045943 is about 280.3988491022.

Adding to 22045943 its reverse (34954022), we get a palindrome (56999965).

The spelling of 22045943 in words is "twenty-two million, forty-five thousand, nine hundred forty-three".