51280055429 has 2 divisors, whose sum is σ = 51280055430. Its totient is φ = 51280055428.

The previous prime is 51280055389. The next prime is 51280055441. The reversal of 51280055429 is 92455008215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51279602500 + 452929 = 226450^2 + 673^2 .

It is a cyclic number.

It is not a de Polignac number, because 51280055429 - 2³² = 46985088133 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51280055929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25640027714 + 25640027715.

It is an arithmetic number, because the mean of its divisors is an integer number (25640027715).

Almost surely, 2^51280055429 is an apocalyptic number.

It is an amenable number.

51280055429 is a deficient number, since it is larger than the sum of its proper divisors (1).

51280055429 is an equidigital number, since it uses as much as digits as its factorization.

51280055429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144000, while the sum is 41.

The spelling of 51280055429 in words is "fifty-one billion, two hundred eighty million, fifty-five thousand, four hundred twenty-nine".