820050503 has 4 divisors (see below), whose sum is σ = 835523208. Its totient is φ = 804577800.

The previous prime is 820050479. The next prime is 820050509. The reversal of 820050503 is 305050028.

820050503 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.

It is a cyclic number.

It is not a de Polignac number, because 820050503 - 2¹² = 820046407 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 (820050509) 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, 7736273 + ... + 7736378.

It is an arithmetic number, because the mean of its divisors is an integer number (208880802).

Almost surely, 2^820050503 is an apocalyptic number.

820050503 is a deficient number, since it is larger than the sum of its proper divisors (15472705).

820050503 is a wasteful number, since it uses less digits than its factorization.

820050503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15472704.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 820050503 is about 28636.5239336062. The cubic root of 820050503 is about 936.0093774933.

The spelling of 820050503 in words is "eight hundred twenty million, fifty thousand, five hundred three".