22206529 has 2 divisors, whose sum is σ = 22206530. Its totient is φ = 22206528.

The previous prime is 22206511. The next prime is 22206557. The reversal of 22206529 is 92560222.

It is an a-pointer prime, because the next prime (22206557) can be obtained adding 22206529 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21160000 + 1046529 = 4600^2 + 1023^2 .

It is a cyclic number.

It is not a de Polignac number, because 22206529 - 2²¹ = 20109377 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22206497 and 22206506.

It is not a weakly prime, because it can be changed into another prime (22206229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11103264 + 11103265.

It is an arithmetic number, because the mean of its divisors is an integer number (11103265).

Almost surely, 2^22206529 is an apocalyptic number.

It is an amenable number.

22206529 is a deficient number, since it is larger than the sum of its proper divisors (1).

22206529 is an equidigital number, since it uses as much as digits as its factorization.

22206529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 22206529 is about 4712.3803963602. The cubic root of 22206529 is about 281.0780253010.

The spelling of 22206529 in words is "twenty-two million, two hundred six thousand, five hundred twenty-nine".