50657729 has 2 divisors, whose sum is σ = 50657730. Its totient is φ = 50657728.

The previous prime is 50657713. The next prime is 50657731. The reversal of 50657729 is 92775605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47334400 + 3323329 = 6880^2 + 1823^2 .

It is a cyclic number.

It is not a de Polignac number, because 50657729 - 2⁴ = 50657713 is a prime.

Together with 50657731, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50657749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25328864 + 25328865.

It is an arithmetic number, because the mean of its divisors is an integer number (25328865).

Almost surely, 2^50657729 is an apocalyptic number.

It is an amenable number.

50657729 is a deficient number, since it is larger than the sum of its proper divisors (1).

50657729 is an equidigital number, since it uses as much as digits as its factorization.

50657729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132300, while the sum is 41.

The square root of 50657729 is about 7117.4243234474. The cubic root of 50657729 is about 370.0115141291.

The spelling of 50657729 in words is "fifty million, six hundred fifty-seven thousand, seven hundred twenty-nine".