22297447 has 2 divisors, whose sum is σ = 22297448. Its totient is φ = 22297446.

The previous prime is 22297441. The next prime is 22297459. The reversal of 22297447 is 74479222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22297447 - 2³ = 22297439 is a prime.

It is a super-2 number, since 2×22297447² = 994352285435618, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22297441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11148723 + 11148724.

It is an arithmetic number, because the mean of its divisors is an integer number (11148724).

Almost surely, 2^22297447 is an apocalyptic number.

22297447 is a deficient number, since it is larger than the sum of its proper divisors (1).

22297447 is an equidigital number, since it uses as much as digits as its factorization.

22297447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 37.

The square root of 22297447 is about 4722.0172596042. The cubic root of 22297447 is about 281.4610996538.

The spelling of 22297447 in words is "twenty-two million, two hundred ninety-seven thousand, four hundred forty-seven".