50312586217 has 2 divisors, whose sum is σ = 50312586218. Its totient is φ = 50312586216.

The previous prime is 50312586197. The next prime is 50312586239. The reversal of 50312586217 is 71268521305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49787443161 + 525143056 = 223131^2 + 22916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50312586217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50312586217.

It is not a weakly prime, because it can be changed into another prime (50312586617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25156293108 + 25156293109.

It is an arithmetic number, because the mean of its divisors is an integer number (25156293109).

Almost surely, 2^50312586217 is an apocalyptic number.

It is an amenable number.

50312586217 is a deficient number, since it is larger than the sum of its proper divisors (1).

50312586217 is an equidigital number, since it uses as much as digits as its factorization.

50312586217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 50312586217 in words is "fifty billion, three hundred twelve million, five hundred eighty-six thousand, two hundred seventeen".