22147513 has 2 divisors, whose sum is σ = 22147514. Its totient is φ = 22147512.

The previous prime is 22147501. The next prime is 22147529. The reversal of 22147513 is 31574122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13927824 + 8219689 = 3732^2 + 2867^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22147513 is a prime.

It is not a weakly prime, because it can be changed into another prime (22147313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11073756 + 11073757.

It is an arithmetic number, because the mean of its divisors is an integer number (11073757).

Almost surely, 2^22147513 is an apocalyptic number.

It is an amenable number.

22147513 is a deficient number, since it is larger than the sum of its proper divisors (1).

22147513 is an equidigital number, since it uses as much as digits as its factorization.

22147513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 25.

The square root of 22147513 is about 4706.1144269981. The cubic root of 22147513 is about 280.8288070448.

The spelling of 22147513 in words is "twenty-two million, one hundred forty-seven thousand, five hundred thirteen".