23215597 has 2 divisors, whose sum is σ = 23215598. Its totient is φ = 23215596.

The previous prime is 23215547. The next prime is 23215667. The reversal of 23215597 is 79551232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22553001 + 662596 = 4749^2 + 814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23215597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23215547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11607798 + 11607799.

It is an arithmetic number, because the mean of its divisors is an integer number (11607799).

Almost surely, 2^23215597 is an apocalyptic number.

It is an amenable number.

23215597 is a deficient number, since it is larger than the sum of its proper divisors (1).

23215597 is an equidigital number, since it uses as much as digits as its factorization.

23215597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 34.

The square root of 23215597 is about 4818.2566349251. The cubic root of 23215597 is about 285.2725288897.

The spelling of 23215597 in words is "twenty-three million, two hundred fifteen thousand, five hundred ninety-seven".