13503043 has 4 divisors (see below), whose sum is σ = 13511488. Its totient is φ = 13494600.

The previous prime is 13503041. The next prime is 13503059. The reversal of 13503043 is 34030531.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13503043 - 2¹ = 13503041 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 13503043.

It is not an unprimeable number, because it can be changed into a prime (13503041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1008 + ... + 5293.

It is an arithmetic number, because the mean of its divisors is an integer number (3377872).

Almost surely, 2^13503043 is an apocalyptic number.

13503043 is a deficient number, since it is larger than the sum of its proper divisors (8445).

13503043 is an equidigital number, since it uses as much as digits as its factorization.

13503043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8444.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 13503043 is about 3674.6486906914. The cubic root of 13503043 is about 238.1280470490.

Adding to 13503043 its reverse (34030531), we get a palindrome (47533574).

The spelling of 13503043 in words is "thirteen million, five hundred three thousand, forty-three".