22147049 has 2 divisors, whose sum is σ = 22147050. Its totient is φ = 22147048.

The previous prime is 22147043. The next prime is 22147061. The reversal of 22147049 is 94074122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20187049 + 1960000 = 4493^2 + 1400^2 .

It is a cyclic number.

It is not a de Polignac number, because 22147049 - 2⁸ = 22146793 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22147043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11073524 + 11073525.

It is an arithmetic number, because the mean of its divisors is an integer number (11073525).

Almost surely, 2^22147049 is an apocalyptic number.

It is an amenable number.

22147049 is a deficient number, since it is larger than the sum of its proper divisors (1).

22147049 is an equidigital number, since it uses as much as digits as its factorization.

22147049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 22147049 is about 4706.0651291711. The cubic root of 22147049 is about 280.8268458693.

The spelling of 22147049 in words is "twenty-two million, one hundred forty-seven thousand, forty-nine".