It is a happy number.
It is a plaindrome in base 15.
It is a nialpdrome in base 7, base 9 and base 10.
It is a zygodrome in base 10.
It is a congruent number.
It is an unprimeable number.
5544 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
25544 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 5544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9360).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
5544 is a wasteful number, since it uses less digits than its factorization.
5544 is an evil number, because the sum of its binary digits is even.
The square root of 5544 is about 74.4580418759. The cubic root of 5544 is about 17.6986880192.
Adding to 5544 its reverse (4455), we get a palindrome (9999).
Subtracting from 5544 its reverse (4455), we obtain a square (1089 = 332).
The spelling of 5544 in words is "five thousand, five hundred forty-four".