195565 has 4 divisors (see below), whose sum is σ = 234684. Its totient is φ = 156448.

The previous prime is 195541. The next prime is 195581. The reversal of 195565 is 565591.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 45796 + 149769 = 214^2 + 387^2 .

It is a cyclic number.

It is not a de Polignac number, because 195565 - 2⁹ = 195053 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19552 + ... + 19561.

It is an arithmetic number, because the mean of its divisors is an integer number (58671).

2¹⁹⁵⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

195565 is a deficient number, since it is larger than the sum of its proper divisors (39119).

195565 is an equidigital number, since it uses as much as digits as its factorization.

195565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39118.

The product of its digits is 6750, while the sum is 31.

The square root of 195565 is about 442.2273171119. The cubic root of 195565 is about 58.0448523452.

The spelling of 195565 in words is "one hundred ninety-five thousand, five hundred sixty-five".