13506003 has 12 divisors (see below), whose sum is σ = 22295728. Its totient is φ = 7717680.

The previous prime is 13506001. The next prime is 13506011. The reversal of 13506003 is 30060531.

13506003 is a `hidden beast` number, since 13 + 50 + 600 + 3 = 666.

13506003 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13506003 - 2¹ = 13506001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13506001) 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 11 ways as a sum of consecutive naturals, for example, 107128 + ... + 107253.

Almost surely, 2^13506003 is an apocalyptic number.

13506003 is a deficient number, since it is larger than the sum of its proper divisors (8789725).

13506003 is a wasteful number, since it uses less digits than its factorization.

13506003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214394 (or 214391 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 13506003 is about 3675.0514282116. The cubic root of 13506003 is about 238.1454457820.

Adding to 13506003 its reverse (30060531), we get a palindrome (43566534).

The spelling of 13506003 in words is "thirteen million, five hundred six thousand, three".