13506903 has 6 divisors (see below), whose sum is σ = 19509984. Its totient is φ = 9004596.

The previous prime is 13506901. The next prime is 13506923. The reversal of 13506903 is 30960531.

It is not a de Polignac number, because 13506903 - 2¹ = 13506901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13506901) 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 5 ways as a sum of consecutive naturals, for example, 750375 + ... + 750392.

It is an arithmetic number, because the mean of its divisors is an integer number (3251664).

Almost surely, 2^13506903 is an apocalyptic number.

13506903 is a deficient number, since it is larger than the sum of its proper divisors (6003081).

13506903 is a wasteful number, since it uses less digits than its factorization.

13506903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500773 (or 1500770 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 27.

The square root of 13506903 is about 3675.1738734378. The cubic root of 13506903 is about 238.1507354333.

The spelling of 13506903 in words is "thirteen million, five hundred six thousand, nine hundred three".