2050315721 has 2 divisors, whose sum is σ = 2050315722. Its totient is φ = 2050315720.

The previous prime is 2050315693. The next prime is 2050315763. The reversal of 2050315721 is 1275130502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2046295696 + 4020025 = 45236^2 + 2005^2 .

It is a cyclic number.

It is not a de Polignac number, because 2050315721 - 2²⁶ = 1983206857 is a prime.

It is not a weakly prime, because it can be changed into another prime (2050315781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025157860 + 1025157861.

It is an arithmetic number, because the mean of its divisors is an integer number (1025157861).

Almost surely, 2^2050315721 is an apocalyptic number.

It is an amenable number.

2050315721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2050315721 is an equidigital number, since it uses as much as digits as its factorization.

2050315721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 2050315721 is about 45280.4121116405. The cubic root of 2050315721 is about 1270.3993042460.

The spelling of 2050315721 in words is "two billion, fifty million, three hundred fifteen thousand, seven hundred twenty-one".