16872503 has 4 divisors (see below), whose sum is σ = 16905288. Its totient is φ = 16839720.

The previous prime is 16872473. The next prime is 16872521. The reversal of 16872503 is 30527861.

It is a happy number.

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 16872503 - 2⁶ = 16872439 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 16872503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16872523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15608 + ... + 16653.

It is an arithmetic number, because the mean of its divisors is an integer number (4226322).

Almost surely, 2^16872503 is an apocalyptic number.

16872503 is a deficient number, since it is larger than the sum of its proper divisors (32785).

16872503 is an equidigital number, since it uses as much as digits as its factorization.

16872503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32784.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 16872503 is about 4107.6152448836. The cubic root of 16872503 is about 256.4837400887.

The spelling of 16872503 in words is "sixteen million, eight hundred seventy-two thousand, five hundred three".