995207561 has 2 divisors, whose sum is σ = 995207562. Its totient is φ = 995207560.

The previous prime is 995207519. The next prime is 995207567. The reversal of 995207561 is 165702599.

It is a happy number.

995207561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 582305161 + 412902400 = 24131^2 + 20320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-995207561 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (995207567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497603780 + 497603781.

It is an arithmetic number, because the mean of its divisors is an integer number (497603781).

Almost surely, 2^995207561 is an apocalyptic number.

It is an amenable number.

995207561 is a deficient number, since it is larger than the sum of its proper divisors (1).

995207561 is an equidigital number, since it uses as much as digits as its factorization.

995207561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 170100, while the sum is 44.

The square root of 995207561 is about 31546.9104826447. The cubic root of 995207561 is about 998.3999615758.

The spelling of 995207561 in words is "nine hundred ninety-five million, two hundred seven thousand, five hundred sixty-one".