13197545 has 4 divisors (see below), whose sum is σ = 15837060. Its totient is φ = 10558032.

The previous prime is 13197539. The next prime is 13197557. The reversal of 13197545 is 54579131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54579131 = 29 ⋅1882039.

It can be written as a sum of positive squares in 2 ways, for example, as 1507984 + 11689561 = 1228^2 + 3419^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13197545 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1319750 + ... + 1319759.

It is an arithmetic number, because the mean of its divisors is an integer number (3959265).

Almost surely, 2^13197545 is an apocalyptic number.

It is an amenable number.

13197545 is a deficient number, since it is larger than the sum of its proper divisors (2639515).

13197545 is an equidigital number, since it uses as much as digits as its factorization.

13197545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639514.

The product of its digits is 18900, while the sum is 35.

The square root of 13197545 is about 3632.8425509510. The cubic root of 13197545 is about 236.3184977234.

The spelling of 13197545 in words is "thirteen million, one hundred ninety-seven thousand, five hundred forty-five".