215795 has 4 divisors (see below), whose sum is σ = 258960. Its totient is φ = 172632.

The previous prime is 215771. The next prime is 215797. The reversal of 215795 is 597512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 215795 - 2¹⁰ = 214771 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215797) 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, 21575 + ... + 21584.

It is an arithmetic number, because the mean of its divisors is an integer number (64740).

2²¹⁵⁷⁹⁵ is an apocalyptic number.

215795 is a deficient number, since it is larger than the sum of its proper divisors (43165).

215795 is an equidigital number, since it uses as much as digits as its factorization.

215795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43164.

The product of its digits is 3150, while the sum is 29.

The square root of 215795 is about 464.5374043067. The cubic root of 215795 is about 59.9810125104.

The spelling of 215795 in words is "two hundred fifteen thousand, seven hundred ninety-five".