50424221 has 2 divisors, whose sum is σ = 50424222. Its totient is φ = 50424220.

The previous prime is 50424181. The next prime is 50424223. The reversal of 50424221 is 12242405.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33292900 + 17131321 = 5770^2 + 4139^2 .

It is a cyclic number.

It is not a de Polignac number, because 50424221 - 2¹⁴ = 50407837 is a prime.

Together with 50424223, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 50424193 and 50424202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50424223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25212110 + 25212111.

It is an arithmetic number, because the mean of its divisors is an integer number (25212111).

Almost surely, 2^50424221 is an apocalyptic number.

It is an amenable number.

50424221 is a deficient number, since it is larger than the sum of its proper divisors (1).

50424221 is an equidigital number, since it uses as much as digits as its factorization.

50424221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 50424221 is about 7101.0014082522. The cubic root of 50424221 is about 369.4421127325.

Subtracting from 50424221 its sum of digits (20), we obtain a square (50424201 = 7101²).

Adding to 50424221 its reverse (12242405), we get a palindrome (62666626).

The spelling of 50424221 in words is "fifty million, four hundred twenty-four thousand, two hundred twenty-one".