195115 has 4 divisors (see below), whose sum is σ = 234144. Its totient is φ = 156088.

The previous prime is 195103. The next prime is 195121. The reversal of 195115 is 511591.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195115 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

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, 19507 + ... + 19516.

It is an arithmetic number, because the mean of its divisors is an integer number (58536).

2¹⁹⁵¹¹⁵ is an apocalyptic number.

195115 is a deficient number, since it is larger than the sum of its proper divisors (39029).

195115 is an equidigital number, since it uses as much as digits as its factorization.

195115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39028.

The product of its digits is 225, while the sum is 22.

The square root of 195115 is about 441.7182359831. The cubic root of 195115 is about 58.0002972636. Note that the first 3 decimals are identical.

The spelling of 195115 in words is "one hundred ninety-five thousand, one hundred fifteen".