50509609 has 2 divisors, whose sum is σ = 50509610. Its totient is φ = 50509608.

The previous prime is 50509603. The next prime is 50509621. The reversal of 50509609 is 90690505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43930384 + 6579225 = 6628^2 + 2565^2 .

It is a cyclic number.

It is not a de Polignac number, because 50509609 - 2¹⁵ = 50476841 is a prime.

It is not a weakly prime, because it can be changed into another prime (50509603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25254804 + 25254805.

It is an arithmetic number, because the mean of its divisors is an integer number (25254805).

Almost surely, 2^50509609 is an apocalyptic number.

It is an amenable number.

50509609 is a deficient number, since it is larger than the sum of its proper divisors (1).

50509609 is an equidigital number, since it uses as much as digits as its factorization.

50509609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 50509609 is about 7107.0112564988. The cubic root of 50509609 is about 369.6505319715.

The spelling of 50509609 in words is "fifty million, five hundred nine thousand, six hundred nine".