22559429 has 2 divisors, whose sum is σ = 22559430. Its totient is φ = 22559428.

The previous prime is 22559423. The next prime is 22559431. The reversal of 22559429 is 92495522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21836929 + 722500 = 4673^2 + 850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22559429 is a prime.

Together with 22559431, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22559392 and 22559401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22559423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11279714 + 11279715.

It is an arithmetic number, because the mean of its divisors is an integer number (11279715).

Almost surely, 2^22559429 is an apocalyptic number.

It is an amenable number.

22559429 is a deficient number, since it is larger than the sum of its proper divisors (1).

22559429 is an equidigital number, since it uses as much as digits as its factorization.

22559429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 38.

The square root of 22559429 is about 4749.6767258415. The cubic root of 22559429 is about 282.5591449506.

The spelling of 22559429 in words is "twenty-two million, five hundred fifty-nine thousand, four hundred twenty-nine".