550530 has 32 divisors (see below), whose sum is σ = 1468800. Its totient is φ = 146736.

The previous prime is 550519. The next prime is 550531. The reversal of 550530 is 35055.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (550531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 750 + ... + 1289.

It is an arithmetic number, because the mean of its divisors is an integer number (45900).

2⁵⁵⁰⁵³⁰ is an apocalyptic number.

550530 is an abundant number, since it is smaller than the sum of its proper divisors (918270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

550530 is a wasteful number, since it uses less digits than its factorization.

550530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055 (or 2049 counting only the distinct ones).

The product of its (nonzero) digits is 375, while the sum is 18.

The square root of 550530 is about 741.9770885951. The cubic root of 550530 is about 81.9584362034.

Adding to 550530 its reverse (35055), we get a palindrome (585585).

The spelling of 550530 in words is "five hundred fifty thousand, five hundred thirty".