50906021 has 2 divisors, whose sum is σ = 50906022. Its totient is φ = 50906020.

The previous prime is 50905993. The next prime is 50906033. The reversal of 50906021 is 12060905.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50608996 + 297025 = 7114^2 + 545^2 .

It is a cyclic number.

It is not a de Polignac number, because 50906021 - 2⁶ = 50905957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50906081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25453010 + 25453011.

It is an arithmetic number, because the mean of its divisors is an integer number (25453011).

Almost surely, 2^50906021 is an apocalyptic number.

It is an amenable number.

50906021 is a deficient number, since it is larger than the sum of its proper divisors (1).

50906021 is an equidigital number, since it uses as much as digits as its factorization.

50906021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 50906021 is about 7134.8455484334. The cubic root of 50906021 is about 370.6150495979.

Adding to 50906021 its reverse (12060905), we get a palindrome (62966926).

It can be divided in two parts, 5090 and 6021, that added together give a palindrome (11111).

The spelling of 50906021 in words is "fifty million, nine hundred six thousand, twenty-one".