51297130091 has 2 divisors, whose sum is σ = 51297130092. Its totient is φ = 51297130090.

The previous prime is 51297130051. The next prime is 51297130133. The reversal of 51297130091 is 19003179215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51297130091 - 2³⁴ = 34117260907 is a prime.

It is not a weakly prime, because it can be changed into another prime (51297130051) 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, 25648565045 + 25648565046.

It is an arithmetic number, because the mean of its divisors is an integer number (25648565046).

Almost surely, 2^51297130091 is an apocalyptic number.

51297130091 is a deficient number, since it is larger than the sum of its proper divisors (1).

51297130091 is an equidigital number, since it uses as much as digits as its factorization.

51297130091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17010, while the sum is 38.

The spelling of 51297130091 in words is "fifty-one billion, two hundred ninety-seven million, one hundred thirty thousand, ninety-one".