50221387 has 2 divisors, whose sum is σ = 50221388. Its totient is φ = 50221386.

The previous prime is 50221373. The next prime is 50221399. The reversal of 50221387 is 78312205.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 50221387 - 2¹⁹ = 49697099 is a prime.

It is not a weakly prime, because it can be changed into another prime (50231387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25110693 + 25110694.

It is an arithmetic number, because the mean of its divisors is an integer number (25110694).

Almost surely, 2^50221387 is an apocalyptic number.

50221387 is a deficient number, since it is larger than the sum of its proper divisors (1).

50221387 is an equidigital number, since it uses as much as digits as its factorization.

50221387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 50221387 is about 7086.7049465884. The cubic root of 50221387 is about 368.9460804532.

The spelling of 50221387 in words is "fifty million, two hundred twenty-one thousand, three hundred eighty-seven".