205197 has 4 divisors (see below), whose sum is σ = 273600. Its totient is φ = 136796.

The previous prime is 205187. The next prime is 205201. The reversal of 205197 is 791502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 205197 - 2⁶ = 205133 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34197 + ... + 34202.

It is an arithmetic number, because the mean of its divisors is an integer number (68400).

2²⁰⁵¹⁹⁷ is an apocalyptic number.

It is an amenable number.

205197 is a deficient number, since it is larger than the sum of its proper divisors (68403).

205197 is an equidigital number, since it uses as much as digits as its factorization.

205197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68402.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 205197 is about 452.9867547732. The cubic root of 205197 is about 58.9825669073.

Adding to 205197 its reverse (791502), we get a palindrome (996699).

The spelling of 205197 in words is "two hundred five thousand, one hundred ninety-seven".