5544 has 48 divisors (see below), whose sum is σ = 18720. Its totient is φ = 1440.

The previous prime is 5531. The next prime is 5557. The reversal of 5544 is 4455.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (5531) and next prime (5557).

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

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.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 499 + ... + 509.

It is an arithmetic number, because the mean of its divisors is an integer number (390).

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).

5544 is an abundant number, since it is smaller than the sum of its proper divisors (13176).

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 sum of its prime factors is 30 (or 23 counting only the distinct ones).

The product of its digits is 400, while the sum is 18.

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).

It can be divided in two parts, 55 and 44, that added together give a palindrome (99).

The spelling of 5544 in words is "five thousand, five hundred forty-four".