210085 has 4 divisors (see below), whose sum is σ = 252108. Its totient is φ = 168064.

The previous prime is 210071. The next prime is 210097. The reversal of 210085 is 580012.

It is a happy number.

210085 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 can be written as a sum of positive squares in 2 ways, for example, as 49284 + 160801 = 222^2 + 401^2 .

It is a cyclic number.

It is not a de Polignac number, because 210085 - 2⁵ = 210053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21004 + ... + 21013.

It is an arithmetic number, because the mean of its divisors is an integer number (63027).

2²¹⁰⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

210085 is a deficient number, since it is larger than the sum of its proper divisors (42023).

210085 is an equidigital number, since it uses as much as digits as its factorization.

210085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42022.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 210085 is about 458.3503027162. The cubic root of 210085 is about 59.4472380231.

Adding to 210085 its reverse (580012), we get a palindrome (790097).

The spelling of 210085 in words is "two hundred ten thousand, eighty-five".