50185129 has 2 divisors, whose sum is σ = 50185130. Its totient is φ = 50185128.

The previous prime is 50185123. The next prime is 50185199. The reversal of 50185129 is 92158105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27878400 + 22306729 = 5280^2 + 4723^2 .

It is a cyclic number.

It is not a de Polignac number, because 50185129 - 2⁵ = 50185097 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50185129.

It is not a weakly prime, because it can be changed into another prime (50185123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25092564 + 25092565.

It is an arithmetic number, because the mean of its divisors is an integer number (25092565).

Almost surely, 2^50185129 is an apocalyptic number.

It is an amenable number.

50185129 is a deficient number, since it is larger than the sum of its proper divisors (1).

50185129 is an equidigital number, since it uses as much as digits as its factorization.

50185129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 50185129 is about 7084.1463141299. The cubic root of 50185129 is about 368.8572705631.

The spelling of 50185129 in words is "fifty million, one hundred eighty-five thousand, one hundred twenty-nine".