195087 has 4 divisors (see below), whose sum is σ = 260120. Its totient is φ = 130056.

The previous prime is 195077. The next prime is 195089. The reversal of 195087 is 780591.

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

It is not a de Polignac number, because 195087 - 2⁴ = 195071 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195089) 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, 32512 + ... + 32517.

It is an arithmetic number, because the mean of its divisors is an integer number (65030).

2¹⁹⁵⁰⁸⁷ is an apocalyptic number.

195087 is a deficient number, since it is larger than the sum of its proper divisors (65033).

195087 is an equidigital number, since it uses as much as digits as its factorization.

195087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65032.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 195087 is about 441.6865404334. The cubic root of 195087 is about 57.9975226845.

The spelling of 195087 in words is "one hundred ninety-five thousand, eighty-seven".