51413129 has 2 divisors, whose sum is σ = 51413130. Its totient is φ = 51413128.

The previous prime is 51413123. The next prime is 51413137. The reversal of 51413129 is 92131415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51093904 + 319225 = 7148^2 + 565^2 .

It is a cyclic number.

It is not a de Polignac number, because 51413129 - 2⁴ = 51413113 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51413098 and 51413107.

It is not a weakly prime, because it can be changed into another prime (51413123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25706564 + 25706565.

It is an arithmetic number, because the mean of its divisors is an integer number (25706565).

Almost surely, 2^51413129 is an apocalyptic number.

It is an amenable number.

51413129 is a deficient number, since it is larger than the sum of its proper divisors (1).

51413129 is an equidigital number, since it uses as much as digits as its factorization.

51413129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 26.

The square root of 51413129 is about 7170.2949032798. The cubic root of 51413129 is about 371.8416315327.

The spelling of 51413129 in words is "fifty-one million, four hundred thirteen thousand, one hundred twenty-nine".