50311809 has 6 divisors (see below), whose sum is σ = 72672626. Its totient is φ = 33541200.

The previous prime is 50311801. The next prime is 50311813. The reversal of 50311809 is 90811305.

It can be written as a sum of positive squares in only one way, i.e., 48608784 + 1703025 = 6972^2 + 1305^2 .

It is not a de Polignac number, because 50311809 - 2³ = 50311801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50311801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2795092 + ... + 2795109.

Almost surely, 2^50311809 is an apocalyptic number.

It is an amenable number.

50311809 is a deficient number, since it is larger than the sum of its proper divisors (22360817).

50311809 is a wasteful number, since it uses less digits than its factorization.

50311809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5590207 (or 5590204 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 50311809 is about 7093.0817702886. The cubic root of 50311809 is about 369.1673728996.

The spelling of 50311809 in words is "fifty million, three hundred eleven thousand, eight hundred nine".