51555055229 has 2 divisors, whose sum is σ = 51555055230. Its totient is φ = 51555055228.

The previous prime is 51555055217. The next prime is 51555055291. The reversal of 51555055229 is 92255055515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38404240900 + 13150814329 = 195970^2 + 114677^2 .

It is a cyclic number.

It is not a de Polignac number, because 51555055229 - 2⁴ = 51555055213 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51555055229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51555055429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25777527614 + 25777527615.

It is an arithmetic number, because the mean of its divisors is an integer number (25777527615).

Almost surely, 2^51555055229 is an apocalyptic number.

It is an amenable number.

51555055229 is a deficient number, since it is larger than the sum of its proper divisors (1).

51555055229 is an equidigital number, since it uses as much as digits as its factorization.

51555055229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 562500, while the sum is 44.

The spelling of 51555055229 in words is "fifty-one billion, five hundred fifty-five million, fifty-five thousand, two hundred twenty-nine".