22590443 has 2 divisors, whose sum is σ = 22590444. Its totient is φ = 22590442.

The previous prime is 22590401. The next prime is 22590479. The reversal of 22590443 is 34409522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22590443 - 2¹⁰ = 22589419 is a prime.

It is a super-2 number, since 2×22590443² = 1020656229872498, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (22590343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11295221 + 11295222.

It is an arithmetic number, because the mean of its divisors is an integer number (11295222).

Almost surely, 2^22590443 is an apocalyptic number.

22590443 is a deficient number, since it is larger than the sum of its proper divisors (1).

22590443 is an equidigital number, since it uses as much as digits as its factorization.

22590443 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 22590443 is about 4752.9404582847. The cubic root of 22590443 is about 282.6885701612.

Adding to 22590443 its reverse (34409522), we get a palindrome (56999965).

The spelling of 22590443 in words is "twenty-two million, five hundred ninety thousand, four hundred forty-three".