50221231 has 2 divisors, whose sum is σ = 50221232. Its totient is φ = 50221230.

The previous prime is 50221217. The next prime is 50221319. The reversal of 50221231 is 13212205.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50221231 - 2⁷ = 50221103 is a prime.

It is a super-2 number, since 2×50221231² = 5044344086310722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50221201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25110615 + 25110616.

It is an arithmetic number, because the mean of its divisors is an integer number (25110616).

Almost surely, 2^50221231 is an apocalyptic number.

50221231 is a deficient number, since it is larger than the sum of its proper divisors (1).

50221231 is an equidigital number, since it uses as much as digits as its factorization.

50221231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 50221231 is about 7086.6939400541. The cubic root of 50221231 is about 368.9456984403.

Adding to 50221231 its reverse (13212205), we get a palindrome (63433436).

The spelling of 50221231 in words is "fifty million, two hundred twenty-one thousand, two hundred thirty-one".