41891 is digitally balanced in base 2, because in such base 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 brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 19814 = 2 ⋅9907.
It is a cyclic number.
It is a Duffinian number.
41891 is an undulating number in base 16.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 41891.
241891 is an apocalyptic number.
41891 is a wasteful number, since it uses less digits than its factorization.
41891 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 420.
The square root of 41891 is about 204.6729097853. The cubic root of 41891 is about 34.7301700088.
Adding to 41891 its sum of digits (23), we get a palindrome (41914).
The spelling of 41891 in words is "forty-one thousand, eight hundred ninety-one".