195456517 has 2 divisors, whose sum is σ = 195456518. Its totient is φ = 195456516.

The previous prime is 195456427. The next prime is 195456529. The reversal of 195456517 is 715654591.

195456517 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., 114618436 + 80838081 = 10706^2 + 8991^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195456517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195456577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97728258 + 97728259.

It is an arithmetic number, because the mean of its divisors is an integer number (97728259).

Almost surely, 2^195456517 is an apocalyptic number.

It is an amenable number.

195456517 is a deficient number, since it is larger than the sum of its proper divisors (1).

195456517 is an equidigital number, since it uses as much as digits as its factorization.

195456517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 189000, while the sum is 43.

The square root of 195456517 is about 13980.5764187318. The cubic root of 195456517 is about 580.3411756073.

It can be divided in two parts, 19545 and 6517, that added together give a palindrome (26062).

The spelling of 195456517 in words is "one hundred ninety-five million, four hundred fifty-six thousand, five hundred seventeen".