It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-211451 is a prime.
It is a Duffinian number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 211451.
2211451 is an apocalyptic number.
211451 is a wasteful number, since it uses less digits than its factorization.
211451 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 409.
The square root of 211451 is about 459.8380149574. The cubic root of 211451 is about 59.5758043312.
Adding to 211451 its reverse (154112), we get a palindrome (365563).
The spelling of 211451 in words is "two hundred eleven thousand, four hundred fifty-one".