10513503 has 64 divisors (see below), whose sum is σ = 20966400. Its totient is φ = 5028480.

The previous prime is 10513501. The next prime is 10513511. The reversal of 10513503 is 30531501.

It is a happy number.

10513503 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10513503 - 2¹ = 10513501 is a prime.

It is a super-2 number, since 2×10513503² = 221067490662018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10513501) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26833 + ... + 27221.

It is an arithmetic number, because the mean of its divisors is an integer number (327600).

Almost surely, 2^10513503 is an apocalyptic number.

10513503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

10513503 is a deficient number, since it is larger than the sum of its proper divisors (10452897).

10513503 is a wasteful number, since it uses less digits than its factorization.

10513503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 10513503 is about 3242.4532379049. The cubic root of 10513503 is about 219.0697844787.

It can be divided in two parts, 1051 and 3503, that added together give a palindrome (4554).

The spelling of 10513503 in words is "ten million, five hundred thirteen thousand, five hundred three".