50421 has 12 divisors (see below), whose sum is σ = 78432.
Its totient is φ = 28812.
The previous prime is 50417. The next prime is 50423. The reversal of 50421 is 12405.
Adding to 50421 its reverse (12405), we get a palindrome (62826).
It can be divided in two parts, 504 and 21, that added together give a palindrome (525).
It is not a de Polignac number, because 50421 - 22 = 50417 is a prime.
50421 is a lucky number.
It is a nialpdrome in base 7.
It is a junction number, because it is equal to n+sod(n) for n = 50397 and 50406.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (50423) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7200 + ... + 7206.
It is an arithmetic number, because the mean of its divisors is an integer number (6536).
250421 is an apocalyptic number.
It is an amenable number.
50421 is a deficient number, since it is larger than the sum of its proper divisors (28011).
50421 is an frugal number, since it uses more digits than its factorization.
50421 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 38 (or 10 counting only the distinct ones).
The product of its (nonzero) digits is 40, while the sum is 12.
The square root of 50421 is about 224.5462090528.
The cubic root of 50421 is about 36.9434246153.
The spelling of 50421 in words is "fifty thousand, four hundred twenty-one".