50947129 has 2 divisors, whose sum is σ = 50947130. Its totient is φ = 50947128.

The previous prime is 50947121. The next prime is 50947153. The reversal of 50947129 is 92174905.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27405225 + 23541904 = 5235^2 + 4852^2 .

It is a cyclic number.

It is not a de Polignac number, because 50947129 - 2³ = 50947121 is a prime.

It is not a weakly prime, because it can be changed into another prime (50947121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25473564 + 25473565.

It is an arithmetic number, because the mean of its divisors is an integer number (25473565).

Almost surely, 2^50947129 is an apocalyptic number.

It is an amenable number.

50947129 is a deficient number, since it is larger than the sum of its proper divisors (1).

50947129 is an equidigital number, since it uses as much as digits as its factorization.

50947129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 50947129 is about 7137.7257582510. The cubic root of 50947129 is about 370.7147833428.

It can be divided in two parts, 50947 and 129, that added together give a square (51076 = 226²).

The spelling of 50947129 in words is "fifty million, nine hundred forty-seven thousand, one hundred twenty-nine".