10520503 has 4 divisors (see below), whose sum is σ = 12023440. Its totient is φ = 9017568.

The previous prime is 10520449. The next prime is 10520507. The reversal of 10520503 is 30502501.

10520503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30502501 = 61 ⋅500041.

It is a de Polignac number, because none of the positive numbers 2^k-10520503 is a prime.

It is a super-2 number, since 2×10520503² = 221361966746018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10520507) 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, 751458 + ... + 751471.

It is an arithmetic number, because the mean of its divisors is an integer number (3005860).

Almost surely, 2^10520503 is an apocalyptic number.

10520503 is a deficient number, since it is larger than the sum of its proper divisors (1502937).

10520503 is an equidigital number, since it uses as much as digits as its factorization.

10520503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502936.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 10520503 is about 3243.5324878903. The cubic root of 10520503 is about 219.1183933417.

The spelling of 10520503 in words is "ten million, five hundred twenty thousand, five hundred three".