195533249 has 2 divisors, whose sum is σ = 195533250. Its totient is φ = 195533248.

The previous prime is 195533231. The next prime is 195533251. The reversal of 195533249 is 942335591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173396224 + 22137025 = 13168^2 + 4705^2 .

It is a cyclic number.

It is not a de Polignac number, because 195533249 - 2¹² = 195529153 is a prime.

It is a Sophie Germain prime.

Together with 195533251, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (195533209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97766624 + 97766625.

It is an arithmetic number, because the mean of its divisors is an integer number (97766625).

Almost surely, 2^195533249 is an apocalyptic number.

It is an amenable number.

195533249 is a deficient number, since it is larger than the sum of its proper divisors (1).

195533249 is an equidigital number, since it uses as much as digits as its factorization.

195533249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 41.

The square root of 195533249 is about 13983.3203853734. The cubic root of 195533249 is about 580.4171088017.

The spelling of 195533249 in words is "one hundred ninety-five million, five hundred thirty-three thousand, two hundred forty-nine".