195523 has 4 divisors (see below), whose sum is σ = 204048. Its totient is φ = 187000.

The previous prime is 195511. The next prime is 195527. The reversal of 195523 is 325591.

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

It is a cyclic number.

It is not a de Polignac number, because 195523 - 2¹⁷ = 64451 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (195527) 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, 4228 + ... + 4273.

It is an arithmetic number, because the mean of its divisors is an integer number (51012).

2¹⁹⁵⁵²³ is an apocalyptic number.

195523 is a deficient number, since it is larger than the sum of its proper divisors (8525).

195523 is an equidigital number, since it uses as much as digits as its factorization.

195523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8524.

The product of its digits is 1350, while the sum is 25.

The square root of 195523 is about 442.1798276720. The cubic root of 195523 is about 58.0406967647.

The spelling of 195523 in words is "one hundred ninety-five thousand, five hundred twenty-three".