195081 has 4 divisors (see below), whose sum is σ = 260112. Its totient is φ = 130052.

The previous prime is 195077. The next prime is 195089. The reversal of 195081 is 180591.

195081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 195081 - 2² = 195077 is a prime.

It is a super-2 number, since 2×195081² = 76113193122, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (195089) 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, 32511 + ... + 32516.

It is an arithmetic number, because the mean of its divisors is an integer number (65028).

2¹⁹⁵⁰⁸¹ is an apocalyptic number.

It is an amenable number.

195081 is a deficient number, since it is larger than the sum of its proper divisors (65031).

195081 is an equidigital number, since it uses as much as digits as its factorization.

195081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65030.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 195081 is about 441.6797482339. The cubic root of 195081 is about 57.9969280973.

The spelling of 195081 in words is "one hundred ninety-five thousand, eighty-one".