550303 has 4 divisors (see below), whose sum is σ = 592648. Its totient is φ = 507960.

The previous prime is 550289. The next prime is 550309. The reversal of 550303 is 303055.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303055 = 5 ⋅60611.

It is a cyclic number.

It is not a de Polignac number, because 550303 - 2¹³ = 542111 is a prime.

It is a Duffinian number.

550303 is a modest number, since divided by 303 gives 55 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550309) 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, 21153 + ... + 21178.

It is an arithmetic number, because the mean of its divisors is an integer number (148162).

2⁵⁵⁰³⁰³ is an apocalyptic number.

550303 is a deficient number, since it is larger than the sum of its proper divisors (42345).

550303 is a wasteful number, since it uses less digits than its factorization.

550303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42344.

The product of its (nonzero) digits is 225, while the sum is 16.

The square root of 550303 is about 741.8241031404. The cubic root of 550303 is about 81.9471700158.

Adding to 550303 its reverse (303055), we get a palindrome (853358).

The spelling of 550303 in words is "five hundred fifty thousand, three hundred three".