195297545 has 4 divisors (see below), whose sum is σ = 234357060. Its totient is φ = 156238032.

The previous prime is 195297541. The next prime is 195297601. The reversal of 195297545 is 545792591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545792591 = 263 ⋅2075257.

It can be written as a sum of positive squares in 2 ways, for example, as 94556176 + 100741369 = 9724^2 + 10037^2 .

It is a cyclic number.

It is not a de Polignac number, because 195297545 - 2² = 195297541 is a prime.

It is a super-2 number, since 2×195297545² = 76282262166054050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 195297545.

It is not an unprimeable number, because it can be changed into a prime (195297541) 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, 19529750 + ... + 19529759.

It is an arithmetic number, because the mean of its divisors is an integer number (58589265).

Almost surely, 2^195297545 is an apocalyptic number.

It is an amenable number.

195297545 is a deficient number, since it is larger than the sum of its proper divisors (39059515).

195297545 is an equidigital number, since it uses as much as digits as its factorization.

195297545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39059514.

The product of its digits is 567000, while the sum is 47.

The square root of 195297545 is about 13974.8898027856. The cubic root of 195297545 is about 580.1837952986.

The spelling of 195297545 in words is "one hundred ninety-five million, two hundred ninety-seven thousand, five hundred forty-five".