50689729 has 2 divisors, whose sum is σ = 50689730. Its totient is φ = 50689728.

The previous prime is 50689711. The next prime is 50689753. The reversal of 50689729 is 92798605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26286129 + 24403600 = 5127^2 + 4940^2 .

It is a cyclic number.

It is not a de Polignac number, because 50689729 - 2¹³ = 50681537 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50689759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25344864 + 25344865.

It is an arithmetic number, because the mean of its divisors is an integer number (25344865).

Almost surely, 2^50689729 is an apocalyptic number.

It is an amenable number.

50689729 is a deficient number, since it is larger than the sum of its proper divisors (1).

50689729 is an equidigital number, since it uses as much as digits as its factorization.

50689729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 50689729 is about 7119.6719727808. The cubic root of 50689729 is about 370.0894086342.

The spelling of 50689729 in words is "fifty million, six hundred eighty-nine thousand, seven hundred twenty-nine".