550900 has 36 divisors (see below), whose sum is σ = 1367968. Its totient is φ = 188640.

The previous prime is 550861. The next prime is 550903. The reversal of 550900 is 9055.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550903) by changing a digit.

550900 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 11 ways as a sum of consecutive naturals, for example, 307 + ... + 1093.

2⁵⁵⁰⁹⁰⁰ is an apocalyptic number.

550900 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 550900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (683984).

550900 is an abundant number, since it is smaller than the sum of its proper divisors (817068).

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

550900 is a wasteful number, since it uses less digits than its factorization.

550900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808 (or 801 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 550900 is about 742.2263805605. The cubic root of 550900 is about 81.9767929568.

Adding to 550900 its reverse (9055), we get a palindrome (559955).

It can be divided in two parts, 5 and 50900, that added together give a palindrome (50905).

The spelling of 550900 in words is "five hundred fifty thousand, nine hundred".