5541 has 4 divisors (see below), whose sum is σ = 7392.
Its totient is φ = 3692.
The previous prime is 5531. The next prime is 5557. The reversal of 5541 is 1455.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 5541 - 26 = 5477 is a prime.
It is a D-number.
It is a Curzon number.
It is a nialpdrome in base 10.
It is a zygodrome in base 4.
It is a self number, because there is not a number n which added to its sum of digits gives 5541.
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 pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921 + ... + 926.
It is an arithmetic number, because the mean of its divisors is an integer number (1848).
25541 is an apocalyptic number.
It is an amenable number.
5541 is a deficient number, since it is larger than the sum of its proper divisors (1851).
5541 is a wasteful number, since it uses less digits than its factorization.
5541 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1850.
The product of its digits is 100, while the sum is 15.
The square root of 5541 is about 74.4378935758.
The cubic root of 5541 is about 17.6954950391.
Adding to 5541 its reverse (1455), we get a palindrome (6996).
It can be divided in two parts, 554 and 1, that added together give a palindrome (555).
The spelling of 5541 in words is "five thousand, five hundred forty-one".