51340129 has 2 divisors, whose sum is σ = 51340130. Its totient is φ = 51340128.

The previous prime is 51340087. The next prime is 51340139. The reversal of 51340129 is 92104315.

51340129 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., 51265600 + 74529 = 7160^2 + 273^2 .

It is a cyclic number.

It is not a de Polignac number, because 51340129 - 2¹¹ = 51338081 is a prime.

It is not a weakly prime, because it can be changed into another prime (51340139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25670064 + 25670065.

It is an arithmetic number, because the mean of its divisors is an integer number (25670065).

Almost surely, 2^51340129 is an apocalyptic number.

It is an amenable number.

51340129 is a deficient number, since it is larger than the sum of its proper divisors (1).

51340129 is an equidigital number, since it uses as much as digits as its factorization.

51340129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 51340129 is about 7165.2026489137. The cubic root of 51340129 is about 371.6655591495.

The spelling of 51340129 in words is "fifty-one million, three hundred forty thousand, one hundred twenty-nine".