195445 has 4 divisors (see below), whose sum is σ = 234540. Its totient is φ = 156352.

The previous prime is 195443. The next prime is 195457. The reversal of 195445 is 544591.

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 66564 + 128881 = 258^2 + 359^2 .

It is a cyclic number.

It is not a de Polignac number, because 195445 - 2¹ = 195443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19540 + ... + 19549.

It is an arithmetic number, because the mean of its divisors is an integer number (58635).

2¹⁹⁵⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

195445 is a deficient number, since it is larger than the sum of its proper divisors (39095).

195445 is an equidigital number, since it uses as much as digits as its factorization.

195445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39094.

The product of its digits is 3600, while the sum is 28.

The square root of 195445 is about 442.0916194637. The cubic root of 195445 is about 58.0329776788.

The spelling of 195445 in words is "one hundred ninety-five thousand, four hundred forty-five".