50129 has 2 divisors, whose sum is σ = 50130. Its totient is φ = 50128.

The previous prime is 50123. The next prime is 50131. The reversal of 50129 is 92105.

50129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49729 + 400 = 223^2 + 20^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50129 is a prime.

Together with 50131, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (50123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25064 + 25065.

It is an arithmetic number, because the mean of its divisors is an integer number (25065).

2⁵⁰¹²⁹ is an apocalyptic number.

It is an amenable number.

50129 is a deficient number, since it is larger than the sum of its proper divisors (1).

50129 is an equidigital number, since it uses as much as digits as its factorization.

50129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 50129 is about 223.8950647067. The cubic root of 50129 is about 36.8719704492.

The spelling of 50129 in words is "fifty thousand, one hundred twenty-nine".