50030721 has 24 divisors (see below), whose sum is σ = 78152256. Its totient is φ = 30659040.

The previous prime is 50030707. The next prime is 50030741. The reversal of 50030721 is 12703005.

50030721 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 50030721 - 2⁷ = 50030593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50030694 and 50030703.

It is not an unprimeable number, because it can be changed into a prime (50030741) 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, 32356 + ... + 33866.

It is an arithmetic number, because the mean of its divisors is an integer number (3256344).

Almost surely, 2^50030721 is an apocalyptic number.

It is an amenable number.

50030721 is a deficient number, since it is larger than the sum of its proper divisors (28121535).

50030721 is a wasteful number, since it uses less digits than its factorization.

50030721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813 (or 1810 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 50030721 is about 7073.2397810339. The cubic root of 50030721 is about 368.4785858375.

Adding to 50030721 its reverse (12703005), we get a palindrome (62733726).

The spelling of 50030721 in words is "fifty million, thirty thousand, seven hundred twenty-one".