50421309 has 4 divisors (see below), whose sum is σ = 67228416. Its totient is φ = 33614204.

The previous prime is 50421299. The next prime is 50421323. The reversal of 50421309 is 90312405.

50421309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50421309 - 2⁷ = 50421181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50421379) 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 3 ways as a sum of consecutive naturals, for example, 8403549 + ... + 8403554.

It is an arithmetic number, because the mean of its divisors is an integer number (16807104).

Almost surely, 2^50421309 is an apocalyptic number.

It is an amenable number.

50421309 is a deficient number, since it is larger than the sum of its proper divisors (16807107).

50421309 is a wasteful number, since it uses less digits than its factorization.

50421309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16807106.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 50421309 is about 7100.7963637891. The cubic root of 50421309 is about 369.4350008319.

The spelling of 50421309 in words is "fifty million, four hundred twenty-one thousand, three hundred nine".