50685709 has 2 divisors, whose sum is σ = 50685710. Its totient is φ = 50685708.

The previous prime is 50685683. The next prime is 50685727. The reversal of 50685709 is 90758605.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49744809 + 940900 = 7053^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 50685709 - 2⁷ = 50685581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50685769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25342854 + 25342855.

It is an arithmetic number, because the mean of its divisors is an integer number (25342855).

Almost surely, 2^50685709 is an apocalyptic number.

It is an amenable number.

50685709 is a deficient number, since it is larger than the sum of its proper divisors (1).

50685709 is an equidigital number, since it uses as much as digits as its factorization.

50685709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 50685709 is about 7119.3896508057. The cubic root of 50685709 is about 370.0796249378.

The spelling of 50685709 in words is "fifty million, six hundred eighty-five thousand, seven hundred nine".