195240247 has 2 divisors, whose sum is σ = 195240248. Its totient is φ = 195240246.

The previous prime is 195240239. The next prime is 195240251. The reversal of 195240247 is 742042591.

195240247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195240247 - 2³ = 195240239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195240347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97620123 + 97620124.

It is an arithmetic number, because the mean of its divisors is an integer number (97620124).

Almost surely, 2^195240247 is an apocalyptic number.

195240247 is a deficient number, since it is larger than the sum of its proper divisors (1).

195240247 is an equidigital number, since it uses as much as digits as its factorization.

195240247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 195240247 is about 13972.8396183453. The cubic root of 195240247 is about 580.1270500509.

The spelling of 195240247 in words is "one hundred ninety-five million, two hundred forty thousand, two hundred forty-seven".