50003 has 4 divisors (see below), whose sum is σ = 51648. Its totient is φ = 48360.

The previous prime is 49999. The next prime is 50021. The reversal of 50003 is 30005.

50003 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 not a de Polignac number, because 50003 - 2² = 49999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50023) 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, 776 + ... + 837.

It is an arithmetic number, because the mean of its divisors is an integer number (12912).

2⁵⁰⁰⁰³ is an apocalyptic number.

50003 is a deficient number, since it is larger than the sum of its proper divisors (1645).

50003 is a wasteful number, since it uses less digits than its factorization.

50003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644.

The product of its (nonzero) digits is 15, while the sum is 8.

The square root of 50003 is about 223.6135058533. The cubic root of 50003 is about 36.8410517780.

Adding to 50003 its reverse (30005), we get a palindrome (80008).

The spelling of 50003 in words is "fifty thousand, three".