50051421 has 24 divisors (see below), whose sum is σ = 82892160. Its totient is φ = 28508256.

The previous prime is 50051389. The next prime is 50051423. The reversal of 50051421 is 12415005.

It is not a de Polignac number, because 50051421 - 2⁵ = 50051389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50051394 and 50051403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50051423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21511 + ... + 23723.

It is an arithmetic number, because the mean of its divisors is an integer number (3453840).

Almost surely, 2^50051421 is an apocalyptic number.

It is an amenable number.

50051421 is a deficient number, since it is larger than the sum of its proper divisors (32840739).

50051421 is a wasteful number, since it uses less digits than its factorization.

50051421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2585 (or 2582 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 50051421 is about 7074.7028912881. The cubic root of 50051421 is about 368.5293976511.

Adding to 50051421 its reverse (12415005), we get a palindrome (62466426).

The spelling of 50051421 in words is "fifty million, fifty-one thousand, four hundred twenty-one".