195363551 has 2 divisors, whose sum is σ = 195363552. Its totient is φ = 195363550.

The previous prime is 195363479. The next prime is 195363583. The reversal of 195363551 is 155363591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195363551 - 2¹⁴ = 195347167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195363451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97681775 + 97681776.

It is an arithmetic number, because the mean of its divisors is an integer number (97681776).

Almost surely, 2^195363551 is an apocalyptic number.

195363551 is a deficient number, since it is larger than the sum of its proper divisors (1).

195363551 is an equidigital number, since it uses as much as digits as its factorization.

195363551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60750, while the sum is 38.

The square root of 195363551 is about 13977.2511961401. The cubic root of 195363551 is about 580.2491507849.

The spelling of 195363551 in words is "one hundred ninety-five million, three hundred sixty-three thousand, five hundred fifty-one".