195733561 has 2 divisors, whose sum is σ = 195733562. Its totient is φ = 195733560.

The previous prime is 195733547. The next prime is 195733583. The reversal of 195733561 is 165337591.

It is a happy number.

195733561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195021225 + 712336 = 13965^2 + 844^2 .

It is a cyclic number.

It is not a de Polignac number, because 195733561 - 2⁹ = 195733049 is a prime.

It is not a weakly prime, because it can be changed into another prime (195733511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97866780 + 97866781.

It is an arithmetic number, because the mean of its divisors is an integer number (97866781).

Almost surely, 2^195733561 is an apocalyptic number.

It is an amenable number.

195733561 is a deficient number, since it is larger than the sum of its proper divisors (1).

195733561 is an equidigital number, since it uses as much as digits as its factorization.

195733561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85050, while the sum is 40.

The square root of 195733561 is about 13990.4810853666. The cubic root of 195733561 is about 580.6152419122.

The spelling of 195733561 in words is "one hundred ninety-five million, seven hundred thirty-three thousand, five hundred sixty-one".