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: 14902 = 2 ⋅7451.
It is a cyclic number.
It is a Duffinian number.
20941 is a lucky number.
It is a plaindrome in base 14.
It is a nialpdrome in base 15.
It is a congruent number.
220941 is an apocalyptic number.
It is an amenable number.
20941 is an equidigital number, since it uses as much as digits as its factorization.
20941 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 530.
The square root of 20941 is about 144.7100549375. The cubic root of 20941 is about 27.5633799850.
The spelling of 20941 in words is "twenty thousand, nine hundred forty-one".