50309509 has 2 divisors, whose sum is σ = 50309510. Its totient is φ = 50309508.

The previous prime is 50309507. The next prime is 50309513. The reversal of 50309509 is 90590305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33524100 + 16785409 = 5790^2 + 4097^2 .

It is a cyclic number.

It is not a de Polignac number, because 50309509 - 2¹ = 50309507 is a prime.

Together with 50309507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50309507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25154754 + 25154755.

It is an arithmetic number, because the mean of its divisors is an integer number (25154755).

Almost surely, 2^50309509 is an apocalyptic number.

It is an amenable number.

50309509 is a deficient number, since it is larger than the sum of its proper divisors (1).

50309509 is an equidigital number, since it uses as much as digits as its factorization.

50309509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6075, while the sum is 31.

The square root of 50309509 is about 7092.9196386255. The cubic root of 50309509 is about 369.1617473291.

The spelling of 50309509 in words is "fifty million, three hundred nine thousand, five hundred nine".