50009281 has 16 divisors (see below), whose sum is σ = 58240000. Its totient is φ = 42059088.

The previous prime is 50009279. The next prime is 50009287. The reversal of 50009281 is 18290005.

50009281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 50009281 - 2¹ = 50009279 is a prime.

It is a super-2 number, since 2×50009281² = 5001856372273922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50009287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99970 + ... + 100468.

It is an arithmetic number, because the mean of its divisors is an integer number (3640000).

Almost surely, 2^50009281 is an apocalyptic number.

It is an amenable number.

50009281 is a deficient number, since it is larger than the sum of its proper divisors (8230719).

50009281 is a wasteful number, since it uses less digits than its factorization.

50009281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 50009281 is about 7071.7240472179. The cubic root of 50009281 is about 368.4259427847.

Adding to 50009281 its reverse (18290005), we get a palindrome (68299286).

The spelling of 50009281 in words is "fifty million, nine thousand, two hundred eighty-one".