50840013 has 24 divisors (see below), whose sum is σ = 82305472. Its totient is φ = 27339264.

The previous prime is 50840003. The next prime is 50840017. The reversal of 50840013 is 31004805.

50840013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 50840013 - 2⁵ = 50839981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50840017) 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 23 ways as a sum of consecutive naturals, for example, 1881 + ... + 10257.

Almost surely, 2^50840013 is an apocalyptic number.

It is an amenable number.

50840013 is a deficient number, since it is larger than the sum of its proper divisors (31465459).

50840013 is a wasteful number, since it uses less digits than its factorization.

50840013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8421 (or 8404 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 50840013 is about 7130.2182996035. The cubic root of 50840013 is about 370.4547925923.

Adding to 50840013 its reverse (31004805), we get a palindrome (81844818).

The spelling of 50840013 in words is "fifty million, eight hundred forty thousand, thirteen".