50220421 has 2 divisors, whose sum is σ = 50220422. Its totient is φ = 50220420.

The previous prime is 50220383. The next prime is 50220461. The reversal of 50220421 is 12402205.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50211396 + 9025 = 7086^2 + 95^2 .

It is a cyclic number.

It is not a de Polignac number, because 50220421 - 2¹¹ = 50218373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50220395 and 50220404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50220461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25110210 + 25110211.

It is an arithmetic number, because the mean of its divisors is an integer number (25110211).

Almost surely, 2^50220421 is an apocalyptic number.

It is an amenable number.

50220421 is a deficient number, since it is larger than the sum of its proper divisors (1).

50220421 is an equidigital number, since it uses as much as digits as its factorization.

50220421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 50220421 is about 7086.6367904670. The cubic root of 50220421 is about 368.9437148992.

Adding to 50220421 its reverse (12402205), we get a palindrome (62622626).

The spelling of 50220421 in words is "fifty million, two hundred twenty thousand, four hundred twenty-one".