550500 has 48 divisors (see below), whose sum is σ = 1607424. Its totient is φ = 146400.

The previous prime is 550489. The next prime is 550513. The reversal of 550500 is 5055.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 550500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1317 + ... + 1683.

It is an arithmetic number, because the mean of its divisors is an integer number (33488).

2⁵⁵⁰⁵⁰⁰ is an apocalyptic number.

550500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (803712).

550500 is an abundant number, since it is smaller than the sum of its proper divisors (1056924).

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

550500 is a wasteful number, since it uses less digits than its factorization.

550500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 377 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 15.

The square root of 550500 is about 741.9568720620. The cubic root of 550500 is about 81.9569474575.

Adding to 550500 its reverse (5055), we get a palindrome (555555).

It can be divided in two parts, 5 and 50500, that added together give a palindrome (50505).

The spelling of 550500 in words is "five hundred fifty thousand, five hundred".