51675767251 has 2 divisors, whose sum is σ = 51675767252. Its totient is φ = 51675767250.

The previous prime is 51675767243. The next prime is 51675767257. The reversal of 51675767251 is 15276757615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51675767251 - 2³ = 51675767243 is a prime.

It is not a weakly prime, because it can be changed into another prime (51675767257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25837883625 + 25837883626.

It is an arithmetic number, because the mean of its divisors is an integer number (25837883626).

Almost surely, 2^51675767251 is an apocalyptic number.

51675767251 is a deficient number, since it is larger than the sum of its proper divisors (1).

51675767251 is an equidigital number, since it uses as much as digits as its factorization.

51675767251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3087000, while the sum is 52.

The spelling of 51675767251 in words is "fifty-one billion, six hundred seventy-five million, seven hundred sixty-seven thousand, two hundred fifty-one".