Adding to 213055 its reverse (550312), we get a palindrome (763367).
213055 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.
It is a Duffinian number.
It is a nialpdrome in base 6.
It is a congruent number.
It is an unprimeable number.
2213055 is an apocalyptic number.
213055 is an equidigital number, since it uses as much as digits as its factorization.
213055 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 42616.
The square root of 213055 is about 461.5788123387. The cubic root of 213055 is about 59.7260660547.
The spelling of 213055 in words is "two hundred thirteen thousand, fifty-five".