10013503 has 4 divisors (see below), whose sum is σ = 10105480. Its totient is φ = 9921528.

The previous prime is 10013501. The next prime is 10013519. The reversal of 10013503 is 30531001.

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 10013503 - 2¹ = 10013501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10013501) 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, 45825 + ... + 46042.

It is an arithmetic number, because the mean of its divisors is an integer number (2526370).

Almost surely, 2^10013503 is an apocalyptic number.

10013503 is a deficient number, since it is larger than the sum of its proper divisors (91977).

10013503 is an equidigital number, since it uses as much as digits as its factorization.

10013503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91976.

The product of its (nonzero) digits is 45, while the sum is 13.

The square root of 10013503 is about 3164.4119516902. The cubic root of 10013503 is about 215.5403964946.

Adding to 10013503 its reverse (30531001), we get a palindrome (40544504).

The spelling of 10013503 in words is "ten million, thirteen thousand, five hundred three".