13539233 has 4 divisors (see below), whose sum is σ = 13547520. Its totient is φ = 13530948.

The previous prime is 13539223. The next prime is 13539241. The reversal of 13539233 is 33293531.

13539233 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13539233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13539196 and 13539205.

It is not an unprimeable number, because it can be changed into a prime (13539223) 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, 785 + ... + 5262.

It is an arithmetic number, because the mean of its divisors is an integer number (3386880).

Almost surely, 2^13539233 is an apocalyptic number.

It is an amenable number.

13539233 is a deficient number, since it is larger than the sum of its proper divisors (8287).

13539233 is an equidigital number, since it uses as much as digits as its factorization.

13539233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8286.

The product of its digits is 7290, while the sum is 29.

The square root of 13539233 is about 3679.5696759268. The cubic root of 13539233 is about 238.3405958415.

The spelling of 13539233 in words is "thirteen million, five hundred thirty-nine thousand, two hundred thirty-three".