It is a sphenic number, since it is the product of 3 distinct primes.
It is a Curzon number.
It is a congruent number.
It is an unprimeable number.
215045 is a Friedman number, since it can be written as 5+210*4^5, using all its digits and the basic arithmetic operations.
2215045 is an apocalyptic number.
It is an amenable number.
215045 is a wasteful number, since it uses less digits than its factorization.
215045 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1095.
The square root of 215045 is about 463.7294469839. The cubic root of 215045 is about 59.9114434340.
Adding to 215045 its reverse (540512), we get a palindrome (755557).
The spelling of 215045 in words is "two hundred fifteen thousand, forty-five".