13541539 has 4 divisors (see below), whose sum is σ = 14772600. Its totient is φ = 12310480.

The previous prime is 13541497. The next prime is 13541569. The reversal of 13541539 is 93514531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13541539 - 2¹⁵ = 13508771 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13541539.

It is not an unprimeable number, because it can be changed into a prime (13541569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 615514 + ... + 615535.

It is an arithmetic number, because the mean of its divisors is an integer number (3693150).

Almost surely, 2^13541539 is an apocalyptic number.

13541539 is a deficient number, since it is larger than the sum of its proper divisors (1231061).

13541539 is a wasteful number, since it uses less digits than its factorization.

13541539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231060.

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

The square root of 13541539 is about 3679.8830144449. The cubic root of 13541539 is about 238.3541264508.

The spelling of 13541539 in words is "thirteen million, five hundred forty-one thousand, five hundred thirty-nine".