22391297 has 2 divisors, whose sum is σ = 22391298. Its totient is φ = 22391296.

The previous prime is 22391287. The next prime is 22391309. The reversal of 22391297 is 79219322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21752896 + 638401 = 4664^2 + 799^2 .

It is a cyclic number.

It is not a de Polignac number, because 22391297 - 2¹⁰ = 22390273 is a prime.

It is not a weakly prime, because it can be changed into another prime (22391287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11195648 + 11195649.

It is an arithmetic number, because the mean of its divisors is an integer number (11195649).

Almost surely, 2^22391297 is an apocalyptic number.

It is an amenable number.

22391297 is a deficient number, since it is larger than the sum of its proper divisors (1).

22391297 is an equidigital number, since it uses as much as digits as its factorization.

22391297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 35.

The square root of 22391297 is about 4731.9443149724. The cubic root of 22391297 is about 281.8554370292.

The spelling of 22391297 in words is "twenty-two million, three hundred ninety-one thousand, two hundred ninety-seven".