Subtracting from 7145 its reverse (5417), we obtain a cube (1728 = 123).
It is a happy number.
7145 is nontrivially palindromic in base 8.
7145 is digitally balanced in base 3, 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.
It is a cyclic number.
It is a plaindrome in base 13.
It is an unprimeable number.
27145 is an apocalyptic number.
It is an amenable number.
7145 is a wasteful number, since it uses less digits than its factorization.
7145 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1434.
The square root of 7145 is about 84.5281018360. The cubic root of 7145 is about 19.2604935198.
The spelling of 7145 in words is "seven thousand, one hundred forty-five".