195171601 has 2 divisors, whose sum is σ = 195171602. Its totient is φ = 195171600.

The previous prime is 195171569. The next prime is 195171637. The reversal of 195171601 is 106171591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141134400 + 54037201 = 11880^2 + 7351^2 .

It is a cyclic number.

It is not a de Polignac number, because 195171601 - 2⁵ = 195171569 is a prime.

It is equal to p_10826554 and since 195171601 and 10826554 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (195171661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97585800 + 97585801.

It is an arithmetic number, because the mean of its divisors is an integer number (97585801).

Almost surely, 2^195171601 is an apocalyptic number.

It is an amenable number.

195171601 is a deficient number, since it is larger than the sum of its proper divisors (1).

195171601 is an equidigital number, since it uses as much as digits as its factorization.

195171601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 31.

The square root of 195171601 is about 13970.3829940342. The cubic root of 195171601 is about 580.0590516570.

The spelling of 195171601 in words is "one hundred ninety-five million, one hundred seventy-one thousand, six hundred one".