13581199 has 2 divisors, whose sum is σ = 13581200. Its totient is φ = 13581198.

The previous prime is 13581173. The next prime is 13581229. The reversal of 13581199 is 99118531.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (99118531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13581199 - 2¹⁷ = 13450127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13581149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6790599 + 6790600.

It is an arithmetic number, because the mean of its divisors is an integer number (6790600).

Almost surely, 2^13581199 is an apocalyptic number.

13581199 is a deficient number, since it is larger than the sum of its proper divisors (1).

13581199 is an equidigital number, since it uses as much as digits as its factorization.

13581199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 37.

The square root of 13581199 is about 3685.2678328719. The cubic root of 13581199 is about 238.5865941434.

The spelling of 13581199 in words is "thirteen million, five hundred eighty-one thousand, one hundred ninety-nine".