195057 has 6 divisors (see below), whose sum is σ = 281762. Its totient is φ = 130032.

The previous prime is 195053. The next prime is 195071. The reversal of 195057 is 750591.

It can be written as a sum of positive squares in only one way, i.e., 194481 + 576 = 441^2 + 24^2 .

It is not a de Polignac number, because 195057 - 2² = 195053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 195057.

It is not an unprimeable number, because it can be changed into a prime (195053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10828 + ... + 10845.

2¹⁹⁵⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

195057 is a deficient number, since it is larger than the sum of its proper divisors (86705).

195057 is a wasteful number, since it uses less digits than its factorization.

195057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21679 (or 21676 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 27.

The square root of 195057 is about 441.6525783917. The cubic root of 195057 is about 57.9945496266.

The spelling of 195057 in words is "one hundred ninety-five thousand, fifty-seven".