550533 has 4 divisors (see below), whose sum is σ = 734048. Its totient is φ = 367020.

The previous prime is 550531. The next prime is 550541. The reversal of 550533 is 335055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 550533 - 2¹ = 550531 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550531) 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, 91753 + ... + 91758.

It is an arithmetic number, because the mean of its divisors is an integer number (183512).

2⁵⁵⁰⁵³³ is an apocalyptic number.

It is an amenable number.

550533 is a deficient number, since it is larger than the sum of its proper divisors (183515).

550533 is a wasteful number, since it uses less digits than its factorization.

550533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183514.

The product of its (nonzero) digits is 1125, while the sum is 21.

The square root of 550533 is about 741.9791102181. The cubic root of 550533 is about 81.9585850750.

Adding to 550533 its reverse (335055), we get a palindrome (885588).

The spelling of 550533 in words is "five hundred fifty thousand, five hundred thirty-three".