195540 has 24 divisors (see below), whose sum is σ = 547680. Its totient is φ = 52128.

The previous prime is 195539. The next prime is 195541. The reversal of 195540 is 45591.

It is an interprime number because it is at equal distance from previous prime (195539) and next prime (195541).

It is a self number, because there is not a number n which added to its sum of digits gives 195540.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 195540.

It is not an unprimeable number, because it can be changed into a prime (195541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1570 + ... + 1689.

It is an arithmetic number, because the mean of its divisors is an integer number (22820).

2¹⁹⁵⁵⁴⁰ is an apocalyptic number.

195540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195540 is an abundant number, since it is smaller than the sum of its proper divisors (352140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195540 is a wasteful number, since it uses less digits than its factorization.

195540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3271 (or 3269 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 195540 is about 442.1990502025. The cubic root of 195540 is about 58.0423788571.

The spelling of 195540 in words is "one hundred ninety-five thousand, five hundred forty".