51022520287 has 2 divisors, whose sum is σ = 51022520288. Its totient is φ = 51022520286.

The previous prime is 51022520231. The next prime is 51022520303. The reversal of 51022520287 is 78202522015.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51022520287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51022520207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25511260143 + 25511260144.

It is an arithmetic number, because the mean of its divisors is an integer number (25511260144).

Almost surely, 2^51022520287 is an apocalyptic number.

51022520287 is a deficient number, since it is larger than the sum of its proper divisors (1).

51022520287 is an equidigital number, since it uses as much as digits as its factorization.

51022520287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22400, while the sum is 34.

The spelling of 51022520287 in words is "fifty-one billion, twenty-two million, five hundred twenty thousand, two hundred eighty-seven".