22447543 has 2 divisors, whose sum is σ = 22447544. Its totient is φ = 22447542.

The previous prime is 22447519. The next prime is 22447547. The reversal of 22447543 is 34574422.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22447543 - 2¹⁷ = 22316471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22447547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11223771 + 11223772.

It is an arithmetic number, because the mean of its divisors is an integer number (11223772).

Almost surely, 2^22447543 is an apocalyptic number.

22447543 is a deficient number, since it is larger than the sum of its proper divisors (1).

22447543 is an equidigital number, since it uses as much as digits as its factorization.

22447543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 31.

The square root of 22447543 is about 4737.8838103103. The cubic root of 22447543 is about 282.0912427112.

The spelling of 22447543 in words is "twenty-two million, four hundred forty-seven thousand, five hundred forty-three".