51775395571 has 2 divisors, whose sum is σ = 51775395572. Its totient is φ = 51775395570.

The previous prime is 51775395557. The next prime is 51775395583. The reversal of 51775395571 is 17559357715.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51775395571 - 2³³ = 43185460979 is a prime.

It is not a weakly prime, because it can be changed into another prime (51775395671) 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, 25887697785 + 25887697786.

It is an arithmetic number, because the mean of its divisors is an integer number (25887697786).

Almost surely, 2^51775395571 is an apocalyptic number.

51775395571 is a deficient number, since it is larger than the sum of its proper divisors (1).

51775395571 is an equidigital number, since it uses as much as digits as its factorization.

51775395571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5788125, while the sum is 55.

The spelling of 51775395571 in words is "fifty-one billion, seven hundred seventy-five million, three hundred ninety-five thousand, five hundred seventy-one".