50509565 has 8 divisors (see below), whose sum is σ = 60831960. Its totient is φ = 40260672.

The previous prime is 50509553. The next prime is 50509573. The reversal of 50509565 is 56590505.

It can be written as a sum of positive squares in 4 ways, for example, as 198916 + 50310649 = 446^2 + 7093^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50509565 - 2¹⁰ = 50508541 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16850 + ... + 19619.

It is an arithmetic number, because the mean of its divisors is an integer number (7603995).

Almost surely, 2^50509565 is an apocalyptic number.

It is an amenable number.

50509565 is a deficient number, since it is larger than the sum of its proper divisors (10322395).

50509565 is a wasteful number, since it uses less digits than its factorization.

50509565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36751.

The product of its (nonzero) digits is 33750, while the sum is 35.

The square root of 50509565 is about 7107.0081609634. The cubic root of 50509565 is about 369.6504246347.

The spelling of 50509565 in words is "fifty million, five hundred nine thousand, five hundred sixty-five".