50015129 has 2 divisors, whose sum is σ = 50015130. Its totient is φ = 50015128.

The previous prime is 50015123. The next prime is 50015131. The reversal of 50015129 is 92151005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48622729 + 1392400 = 6973^2 + 1180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50015129 is a prime.

Together with 50015131, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_3001955 and since 50015129 and 3001955 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (50015123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25007564 + 25007565.

It is an arithmetic number, because the mean of its divisors is an integer number (25007565).

Almost surely, 2^50015129 is an apocalyptic number.

It is an amenable number.

50015129 is a deficient number, since it is larger than the sum of its proper divisors (1).

50015129 is an equidigital number, since it uses as much as digits as its factorization.

50015129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 50015129 is about 7072.1375128033. The cubic root of 50015129 is about 368.4403032587.

The spelling of 50015129 in words is "fifty million, fifteen thousand, one hundred twenty-nine".