22147529 has 2 divisors, whose sum is σ = 22147530. Its totient is φ = 22147528.

The previous prime is 22147513. The next prime is 22147579. The reversal of 22147529 is 92574122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20457529 + 1690000 = 4523^2 + 1300^2 .

It is a cyclic number.

It is not a de Polignac number, because 22147529 - 2⁴ = 22147513 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22147495 and 22147504.

It is not a weakly prime, because it can be changed into another prime (22147579) 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, 11073764 + 11073765.

It is an arithmetic number, because the mean of its divisors is an integer number (11073765).

Almost surely, 2^22147529 is an apocalyptic number.

It is an amenable number.

22147529 is a deficient number, since it is larger than the sum of its proper divisors (1).

22147529 is an equidigital number, since it uses as much as digits as its factorization.

22147529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 32.

The square root of 22147529 is about 4706.1161269140. The cubic root of 22147529 is about 280.8288746710.

The spelling of 22147529 in words is "twenty-two million, one hundred forty-seven thousand, five hundred twenty-nine".