13197559 has 4 divisors (see below), whose sum is σ = 13973904. Its totient is φ = 12421216.

The previous prime is 13197557. The next prime is 13197563. The reversal of 13197559 is 95579131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13197559 - 2¹ = 13197557 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13197557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388147 + ... + 388180.

It is an arithmetic number, because the mean of its divisors is an integer number (3493476).

Almost surely, 2^13197559 is an apocalyptic number.

13197559 is a deficient number, since it is larger than the sum of its proper divisors (776345).

13197559 is an equidigital number, since it uses as much as digits as its factorization.

13197559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776344.

The product of its digits is 42525, while the sum is 40.

The square root of 13197559 is about 3632.8444778162. The cubic root of 13197559 is about 236.3185812858.

The spelling of 13197559 in words is "thirteen million, one hundred ninety-seven thousand, five hundred fifty-nine".