50660809 has 2 divisors, whose sum is σ = 50660810. Its totient is φ = 50660808.

The previous prime is 50660803. The next prime is 50660839. The reversal of 50660809 is 90806605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30769209 + 19891600 = 5547^2 + 4460^2 .

It is a cyclic number.

It is not a de Polignac number, because 50660809 - 2¹¹ = 50658761 is a prime.

It is not a weakly prime, because it can be changed into another prime (50660803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25330404 + 25330405.

It is an arithmetic number, because the mean of its divisors is an integer number (25330405).

Almost surely, 2^50660809 is an apocalyptic number.

It is an amenable number.

50660809 is a deficient number, since it is larger than the sum of its proper divisors (1).

50660809 is an equidigital number, since it uses as much as digits as its factorization.

50660809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 50660809 is about 7117.6406905659. The cubic root of 50660809 is about 370.0190129017.

The spelling of 50660809 in words is "fifty million, six hundred sixty thousand, eight hundred nine".