22205543 has 2 divisors, whose sum is σ = 22205544. Its totient is φ = 22205542.

The previous prime is 22205537. The next prime is 22205549. The reversal of 22205543 is 34550222.

It is a balanced prime because it is at equal distance from previous prime (22205537) and next prime (22205549).

It is a cyclic number.

It is not a de Polignac number, because 22205543 - 2⁴ = 22205527 is a prime.

It is a super-2 number, since 2×22205543² = 986172279849698, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22205549) 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, 11102771 + 11102772.

It is an arithmetic number, because the mean of its divisors is an integer number (11102772).

Almost surely, 2^22205543 is an apocalyptic number.

22205543 is a deficient number, since it is larger than the sum of its proper divisors (1).

22205543 is an equidigital number, since it uses as much as digits as its factorization.

22205543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 22205543 is about 4712.2757771591. The cubic root of 22205543 is about 281.0738651576.

Adding to 22205543 its reverse (34550222), we get a palindrome (56755765).

The spelling of 22205543 in words is "twenty-two million, two hundred five thousand, five hundred forty-three".