13315543 has 2 divisors, whose sum is σ = 13315544. Its totient is φ = 13315542.

The previous prime is 13315541. The next prime is 13315559. The reversal of 13315543 is 34551331.

It is a weak prime.

It is an emirp because it is prime and its reverse (34551331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13315543 - 2¹ = 13315541 is a prime.

Together with 13315541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13315541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6657771 + 6657772.

It is an arithmetic number, because the mean of its divisors is an integer number (6657772).

Almost surely, 2^13315543 is an apocalyptic number.

13315543 is a deficient number, since it is larger than the sum of its proper divisors (1).

13315543 is an equidigital number, since it uses as much as digits as its factorization.

13315543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 25.

The square root of 13315543 is about 3649.0468618531. The cubic root of 13315543 is about 237.0207094961.

Adding to 13315543 its reverse (34551331), we get a palindrome (47866874).

The spelling of 13315543 in words is "thirteen million, three hundred fifteen thousand, five hundred forty-three".