550003 has 4 divisors (see below), whose sum is σ = 558280. Its totient is φ = 541728.

The previous prime is 549979. The next prime is 550007. The reversal of 550003 is 300055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550007) 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, 4038 + ... + 4171.

It is an arithmetic number, because the mean of its divisors is an integer number (139570).

2⁵⁵⁰⁰⁰³ is an apocalyptic number.

550003 is a deficient number, since it is larger than the sum of its proper divisors (8277).

550003 is an equidigital number, since it uses as much as digits as its factorization.

550003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8276.

The product of its (nonzero) digits is 75, while the sum is 13.

The square root of 550003 is about 741.6218713064. The cubic root of 550003 is about 81.9322760273.

Adding to 550003 its reverse (300055), we get a palindrome (850058).

The spelling of 550003 in words is "five hundred fifty thousand, three".