50280021 has 20 divisors (see below), whose sum is σ = 81939264. Its totient is φ = 30472200.

The previous prime is 50280019. The next prime is 50280037. The reversal of 50280021 is 12008205.

It is not a de Polignac number, because 50280021 - 2¹ = 50280019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50279976 and 50280003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50280011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 27325 + ... + 29106.

Almost surely, 2^50280021 is an apocalyptic number.

It is an amenable number.

50280021 is a deficient number, since it is larger than the sum of its proper divisors (31659243).

50280021 is a wasteful number, since it uses less digits than its factorization.

50280021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56454 (or 56445 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 50280021 is about 7090.8406412780. The cubic root of 50280021 is about 369.0896074271.

Adding to 50280021 its reverse (12008205), we get a palindrome (62288226).

The spelling of 50280021 in words is "fifty million, two hundred eighty thousand, twenty-one".