50660009 has 2 divisors, whose sum is σ = 50660010. Its totient is φ = 50660008.

The previous prime is 50660003. The next prime is 50660011. The reversal of 50660009 is 90006605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39100009 + 11560000 = 6253^2 + 3400^2 .

It is a cyclic number.

It is not a de Polignac number, because 50660009 - 2⁸ = 50659753 is a prime.

Together with 50660011, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50660009.

It is not a weakly prime, because it can be changed into another prime (50660003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25330004 + 25330005.

It is an arithmetic number, because the mean of its divisors is an integer number (25330005).

Almost surely, 2^50660009 is an apocalyptic number.

It is an amenable number.

50660009 is a deficient number, since it is larger than the sum of its proper divisors (1).

50660009 is an equidigital number, since it uses as much as digits as its factorization.

50660009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 50660009 is about 7117.5844919467. The cubic root of 50660009 is about 370.0170651978.

The spelling of 50660009 in words is "fifty million, six hundred sixty thousand, nine".