Multipling 167281 by its sum of digits (25), we get a square (4182025 = 20452).
The square root of 167281 is 409.
167281 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: 182761 = 19 ⋅9619.
It is a Duffinian number.
167281 is a lucky number.
167281 is a Friedman number, since it can be written as (61*7-18)^2, using all its digits and the basic arithmetic operations.
2167281 is an apocalyptic number.
167281 is the 409-th square number.
167281 is the 205-th centered octagonal number.
It is an amenable number.
167281 is an frugal number, since it uses more digits than its factorization.
167281 is an odious number, because the sum of its binary digits is odd.
The cubic root of 167281 is about 55.0996540394.
The spelling of 167281 in words is "one hundred sixty-seven thousand, two hundred eighty-one".