195811055 has 16 divisors (see below), whose sum is σ = 269827200. Its totient is φ = 134912160.

The previous prime is 195811019. The next prime is 195811061. The reversal of 195811055 is 550118591.

It is not a de Polignac number, because 195811055 - 2¹² = 195806959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92645 + ... + 94734.

It is an arithmetic number, because the mean of its divisors is an integer number (16864200).

Almost surely, 2^195811055 is an apocalyptic number.

195811055 is a deficient number, since it is larger than the sum of its proper divisors (74016145).

195811055 is a wasteful number, since it uses less digits than its factorization.

195811055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187414.

The product of its (nonzero) digits is 9000, while the sum is 35.

The square root of 195811055 is about 13993.2503372162. The cubic root of 195811055 is about 580.6918567088.

The spelling of 195811055 in words is "one hundred ninety-five million, eight hundred eleven thousand, fifty-five".