50757809 has 2 divisors, whose sum is σ = 50757810. Its totient is φ = 50757808.

The previous prime is 50757787. The next prime is 50757851. The reversal of 50757809 is 90875705.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41473600 + 9284209 = 6440^2 + 3047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50757809 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50757899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25378904 + 25378905.

It is an arithmetic number, because the mean of its divisors is an integer number (25378905).

Almost surely, 2^50757809 is an apocalyptic number.

It is an amenable number.

50757809 is a deficient number, since it is larger than the sum of its proper divisors (1).

50757809 is an equidigital number, since it uses as much as digits as its factorization.

50757809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 88200, while the sum is 41.

The square root of 50757809 is about 7124.4514876585. The cubic root of 50757809 is about 370.2550201954.

Adding to 50757809 its sum of digits (41), we get a triangular number (50757850 = T₁₀₀₇₅).

The spelling of 50757809 in words is "fifty million, seven hundred fifty-seven thousand, eight hundred nine".