50315509 has 2 divisors, whose sum is σ = 50315510. Its totient is φ = 50315508.

The previous prime is 50315501. The next prime is 50315533. The reversal of 50315509 is 90551305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45185284 + 5130225 = 6722^2 + 2265^2 .

It is a cyclic number.

It is not a de Polignac number, because 50315509 - 2³ = 50315501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50315501) 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, 25157754 + 25157755.

It is an arithmetic number, because the mean of its divisors is an integer number (25157755).

Almost surely, 2^50315509 is an apocalyptic number.

It is an amenable number.

50315509 is a deficient number, since it is larger than the sum of its proper divisors (1).

50315509 is an equidigital number, since it uses as much as digits as its factorization.

50315509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3375, while the sum is 28.

The square root of 50315509 is about 7093.3425830140. The cubic root of 50315509 is about 369.1764223708.

The spelling of 50315509 in words is "fifty million, three hundred fifteen thousand, five hundred nine".