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: 30854 = 2 ⋅15427.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-45803 is a prime.
It is a Duffinian number.
It is a plaindrome in base 14.
It is a nialpdrome in base 15.
245803 is an apocalyptic number.
45803 is a wasteful number, since it uses less digits than its factorization.
45803 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 444.
The square root of 45803 is about 214.0163545153. The cubic root of 45803 is about 35.7792562119.
The spelling of 45803 in words is "forty-five thousand, eight hundred three".