217852 has 12 divisors (see below), whose sum is σ = 385560. Its totient is φ = 107696.

The previous prime is 217849. The next prime is 217859. The reversal of 217852 is 258712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217859) 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 3 ways as a sum of consecutive naturals, for example, 174 + ... + 682.

It is an arithmetic number, because the mean of its divisors is an integer number (32130).

2²¹⁷⁸⁵² is an apocalyptic number.

It is an amenable number.

217852 is a deficient number, since it is larger than the sum of its proper divisors (167708).

217852 is a wasteful number, since it uses less digits than its factorization.

217852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 618 counting only the distinct ones).

The product of its digits is 1120, while the sum is 25.

The square root of 217852 is about 466.7461837016. The cubic root of 217852 is about 60.1709937044.

The spelling of 217852 in words is "two hundred seventeen thousand, eight hundred fifty-two".