195212617 has 2 divisors, whose sum is σ = 195212618. Its totient is φ = 195212616.

The previous prime is 195212609. The next prime is 195212623. The reversal of 195212617 is 716212591.

195212617 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 can be written as a sum of positive squares in only one way, i.e., 149230656 + 45981961 = 12216^2 + 6781^2 .

It is an emirp because it is prime and its reverse (716212591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195212617 - 2³ = 195212609 is a prime.

It is not a weakly prime, because it can be changed into another prime (195212657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97606308 + 97606309.

It is an arithmetic number, because the mean of its divisors is an integer number (97606309).

Almost surely, 2^195212617 is an apocalyptic number.

It is an amenable number.

195212617 is a deficient number, since it is larger than the sum of its proper divisors (1).

195212617 is an equidigital number, since it uses as much as digits as its factorization.

195212617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 34.

The square root of 195212617 is about 13971.8508795363. The cubic root of 195212617 is about 580.0996826291.

The spelling of 195212617 in words is "one hundred ninety-five million, two hundred twelve thousand, six hundred seventeen".