50530309 has 2 divisors, whose sum is σ = 50530310. Its totient is φ = 50530308.

The previous prime is 50530301. The next prime is 50530331. The reversal of 50530309 is 90303505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50481025 + 49284 = 7105^2 + 222^2 .

It is a cyclic number.

It is not a de Polignac number, because 50530309 - 2³ = 50530301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50530301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25265154 + 25265155.

It is an arithmetic number, because the mean of its divisors is an integer number (25265155).

Almost surely, 2^50530309 is an apocalyptic number.

It is an amenable number.

50530309 is a deficient number, since it is larger than the sum of its proper divisors (1).

50530309 is an equidigital number, since it uses as much as digits as its factorization.

50530309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2025, while the sum is 25.

The square root of 50530309 is about 7108.4674156952. The cubic root of 50530309 is about 369.7010221727.

The spelling of 50530309 in words is "fifty million, five hundred thirty thousand, three hundred nine".