13197539 has 2 divisors, whose sum is σ = 13197540. Its totient is φ = 13197538.

The previous prime is 13197497. The next prime is 13197557. The reversal of 13197539 is 93579131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13197539 - 2¹² = 13193443 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13197439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6598769 + 6598770.

It is an arithmetic number, because the mean of its divisors is an integer number (6598770).

Almost surely, 2^13197539 is an apocalyptic number.

13197539 is a deficient number, since it is larger than the sum of its proper divisors (1).

13197539 is an equidigital number, since it uses as much as digits as its factorization.

13197539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25515, while the sum is 38.

The square root of 13197539 is about 3632.8417251513. The cubic root of 13197539 is about 236.3184619109.

The spelling of 13197539 in words is "thirteen million, one hundred ninety-seven thousand, five hundred thirty-nine".