15441 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.
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, and also an emirpimes, since its reverse is a distinct semiprime: 14451 = 3 ⋅4817.
It is a cyclic number.
It is an Ulam number.
It is a D-number.
It is a plaindrome in base 14.
It is a self number, because there is not a number n which added to its sum of digits gives 15441.
215441 is an apocalyptic number.
It is an amenable number.
15441 is an equidigital number, since it uses as much as digits as its factorization.
15441 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5150.
The square root of 15441 is about 124.2618203633. The cubic root of 15441 is about 24.9014789206.
Adding to 15441 its reverse (14451), we get a palindrome (29892).
Subtracting from 15441 its reverse (14451), we obtain a triangular number (990 = T44).
The spelling of 15441 in words is "fifteen thousand, four hundred forty-one".