195512501 has 2 divisors, whose sum is σ = 195512502. Its totient is φ = 195512500.

The previous prime is 195512497. The next prime is 195512507. The reversal of 195512501 is 105215591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107640625 + 87871876 = 10375^2 + 9374^2 .

It is a cyclic number.

It is not a de Polignac number, because 195512501 - 2² = 195512497 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195512507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97756250 + 97756251.

It is an arithmetic number, because the mean of its divisors is an integer number (97756251).

Almost surely, 2^195512501 is an apocalyptic number.

It is an amenable number.

195512501 is a deficient number, since it is larger than the sum of its proper divisors (1).

195512501 is an equidigital number, since it uses as much as digits as its factorization.

195512501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2250, while the sum is 29.

The square root of 195512501 is about 13982.5784818109. The cubic root of 195512501 is about 580.3965787551.

The spelling of 195512501 in words is "one hundred ninety-five million, five hundred twelve thousand, five hundred one".