219055961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-219055961 is a prime.
It is a Sophie Germain prime.
It is a Chen prime.
It is a Curzon number.
Almost surely, 2219055961 is an apocalyptic number.
It is an amenable number.
219055961 is an equidigital number, since it uses as much as digits as its factorization.
219055961 is an evil number, because the sum of its binary digits is even.
The square root of 219055961 is about 14800.5392131503. The cubic root of 219055961 is about 602.8163530931.
The spelling of 219055961 in words is "two hundred nineteen million, fifty-five thousand, nine hundred sixty-one".