13216543 has 2 divisors, whose sum is σ = 13216544. Its totient is φ = 13216542.

The previous prime is 13216519. The next prime is 13216549. The reversal of 13216543 is 34561231.

It is a strong prime.

It is an emirp because it is prime and its reverse (34561231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13216543 - 2⁹ = 13216031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13216549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6608271 + 6608272.

It is an arithmetic number, because the mean of its divisors is an integer number (6608272).

Almost surely, 2^13216543 is an apocalyptic number.

13216543 is a deficient number, since it is larger than the sum of its proper divisors (1).

13216543 is an equidigital number, since it uses as much as digits as its factorization.

13216543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 25.

The square root of 13216543 is about 3635.4563675005. The cubic root of 13216543 is about 236.4318376483.

Adding to 13216543 its reverse (34561231), we get a palindrome (47777774).

The spelling of 13216543 in words is "thirteen million, two hundred sixteen thousand, five hundred forty-three".