195211 has 4 divisors (see below), whose sum is σ = 206712. Its totient is φ = 183712.

The previous prime is 195203. The next prime is 195229. The reversal of 195211 is 112591.

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 195211 - 2³ = 195203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195241) 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, 5725 + ... + 5758.

It is an arithmetic number, because the mean of its divisors is an integer number (51678).

2¹⁹⁵²¹¹ is an apocalyptic number.

195211 is a deficient number, since it is larger than the sum of its proper divisors (11501).

195211 is a wasteful number, since it uses less digits than its factorization.

195211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11500.

The product of its digits is 90, while the sum is 19.

The square root of 195211 is about 441.8268891772. The cubic root of 195211 is about 58.0098080916.

It can be divided in two parts, 195 and 211, that added together give a triangular number (406 = T₂₈).

The spelling of 195211 in words is "one hundred ninety-five thousand, two hundred eleven".