2102503 has 4 divisors (see below), whose sum is σ = 2264248. Its totient is φ = 1940760.

The previous prime is 2102497. The next prime is 2102519. The reversal of 2102503 is 3052012.

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 2102503 - 2²¹ = 5351 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 161731 = 2102503 / (2 + 1 + 0 + 2 + 5 + 0 + 3).

It is a Duffinian number.

2102503 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102533) 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, 80853 + ... + 80878.

It is an arithmetic number, because the mean of its divisors is an integer number (566062).

2^2102503 is an apocalyptic number.

2102503 is a deficient number, since it is larger than the sum of its proper divisors (161745).

2102503 is a wasteful number, since it uses less digits than its factorization.

2102503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161744.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 2102503 is about 1450.0010344824. The cubic root of 2102503 is about 128.1087739119.

Adding to 2102503 its reverse (3052012), we get a palindrome (5154515).

The spelling of 2102503 in words is "two million, one hundred two thousand, five hundred three".