13539541 has 4 divisors (see below), whose sum is σ = 13702752. Its totient is φ = 13376332.

The previous prime is 13539511. The next prime is 13539557. The reversal of 13539541 is 14593531.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 13539541 - 2¹¹ = 13537493 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13539511) 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, 81481 + ... + 81646.

It is an arithmetic number, because the mean of its divisors is an integer number (3425688).

Almost surely, 2^13539541 is an apocalyptic number.

It is an amenable number.

13539541 is a deficient number, since it is larger than the sum of its proper divisors (163211).

13539541 is an equidigital number, since it uses as much as digits as its factorization.

13539541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163210.

The product of its digits is 8100, while the sum is 31.

The square root of 13539541 is about 3679.6115284089. The cubic root of 13539541 is about 238.3424031410.

The spelling of 13539541 in words is "thirteen million, five hundred thirty-nine thousand, five hundred forty-one".