210801 has 8 divisors (see below), whose sum is σ = 290880. Its totient is φ = 135632.

The previous prime is 210773. The next prime is 210803. The reversal of 210801 is 108012.

It is a happy number.

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 2^k-210801 is a prime.

210801 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 210801.

It is not an unprimeable number, because it can be changed into a prime (210803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1125 + ... + 1298.

It is an arithmetic number, because the mean of its divisors is an integer number (36360).

2²¹⁰⁸⁰¹ is an apocalyptic number.

It is an amenable number.

210801 is a deficient number, since it is larger than the sum of its proper divisors (80079).

210801 is a wasteful number, since it uses less digits than its factorization.

210801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 210801 is about 459.1307003458. The cubic root of 210801 is about 59.5146963674.

Adding to 210801 its reverse (108012), we get a palindrome (318813).

The spelling of 210801 in words is "two hundred ten thousand, eight hundred one".