217083 has 6 divisors (see below), whose sum is σ = 290524. Its totient is φ = 144184.

The previous prime is 217081. The next prime is 217111. The reversal of 217083 is 380712.

It is not a de Polignac number, because 217083 - 2¹ = 217081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (217081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 673 + ... + 941.

217083 is a Friedman number, since it can be written as (807*1)^2/3, using all its digits and the basic arithmetic operations.

2²¹⁷⁰⁸³ is an apocalyptic number.

217083 is a deficient number, since it is larger than the sum of its proper divisors (73441).

217083 is an frugal number, since it uses more digits than its factorization.

217083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 217083 is about 465.9216672360. The cubic root of 217083 is about 60.1001106492.

Adding to 217083 its reverse (380712), we get a palindrome (597795).

The spelling of 217083 in words is "two hundred seventeen thousand, eighty-three".