53531 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: 13535 = 5 ⋅2707.
It is a cyclic number.
It is a Duffinian number.
It is a congruent number.
253531 is an apocalyptic number.
53531 is a wasteful number, since it uses less digits than its factorization.
53531 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 468.
The square root of 53531 is about 231.3676727635. The cubic root of 53531 is about 37.6878866866.
The spelling of 53531 in words is "fifty-three thousand, five hundred thirty-one".