5500 has 24 divisors (see below), whose sum is σ = 13104. Its totient is φ = 2000.

The previous prime is 5483. The next prime is 5501. The reversal of 5500 is 55.

It is a Harshad number since it is a multiple of its sum of digits (10).

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

It is a plaindrome in base 16.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 495 + ... + 505.

It is an arithmetic number, because the mean of its divisors is an integer number (546).

2⁵⁵⁰⁰ is an apocalyptic number.

5500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5500 is the 40-th nonagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6552).

5500 is an abundant number, since it is smaller than the sum of its proper divisors (7604).

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

5500 is a wasteful number, since it uses less digits than its factorization.

5500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30 (or 18 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 10.

The square root of 5500 is about 74.1619848710. The cubic root of 5500 is about 17.6517416766.

Adding to 5500 its reverse (55), we get a palindrome (5555).

Subtracting from 5500 its reverse (55), we obtain a palindrome (5445).

Multiplying 5500 by its reverse (55), we get a square (302500 = 550²).

5500 divided by its reverse (55) gives a square (100 = 10²).

It can be divided in two parts, 5 and 500, that multiplied together give a square (2500 = 50²).

The spelling of 5500 in words is "five thousand, five hundred".