195520711 has 2 divisors, whose sum is σ = 195520712. Its totient is φ = 195520710.

The previous prime is 195520709. The next prime is 195520739. The reversal of 195520711 is 117025591.

It is a weak prime.

It is an emirp because it is prime and its reverse (117025591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195520711 - 2¹ = 195520709 is a prime.

Together with 195520709, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195520781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97760355 + 97760356.

It is an arithmetic number, because the mean of its divisors is an integer number (97760356).

Almost surely, 2^195520711 is an apocalyptic number.

195520711 is a deficient number, since it is larger than the sum of its proper divisors (1).

195520711 is an equidigital number, since it uses as much as digits as its factorization.

195520711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 31.

The square root of 195520711 is about 13982.8720583434. The cubic root of 195520711 is about 580.4047026844.

The spelling of 195520711 in words is "one hundred ninety-five million, five hundred twenty thousand, seven hundred eleven".