50616809 has 2 divisors, whose sum is σ = 50616810. Its totient is φ = 50616808.

The previous prime is 50616799. The next prime is 50616827. The reversal of 50616809 is 90861605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43191184 + 7425625 = 6572^2 + 2725^2 .

It is a cyclic number.

It is not a de Polignac number, because 50616809 - 2⁴ = 50616793 is a prime.

It is a super-2 number, since 2×50616809² = 5124122706684962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50616869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25308404 + 25308405.

It is an arithmetic number, because the mean of its divisors is an integer number (25308405).

Almost surely, 2^50616809 is an apocalyptic number.

It is an amenable number.

50616809 is a deficient number, since it is larger than the sum of its proper divisors (1).

50616809 is an equidigital number, since it uses as much as digits as its factorization.

50616809 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 35.

The square root of 50616809 is about 7114.5491072871. The cubic root of 50616809 is about 369.9118587222.

The spelling of 50616809 in words is "fifty million, six hundred sixteen thousand, eight hundred nine".