51754793161 has 2 divisors, whose sum is σ = 51754793162. Its totient is φ = 51754793160.

The previous prime is 51754793159. The next prime is 51754793171. The reversal of 51754793161 is 16139745715.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45563463936 + 6191329225 = 213456^2 + 78685^2 .

It is a cyclic number.

It is not a de Polignac number, because 51754793161 - 2¹ = 51754793159 is a prime.

Together with 51754793159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51754793171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25877396580 + 25877396581.

It is an arithmetic number, because the mean of its divisors is an integer number (25877396581).

Almost surely, 2^51754793161 is an apocalyptic number.

It is an amenable number.

51754793161 is a deficient number, since it is larger than the sum of its proper divisors (1).

51754793161 is an equidigital number, since it uses as much as digits as its factorization.

51754793161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 793800, while the sum is 49.

The spelling of 51754793161 in words is "fifty-one billion, seven hundred fifty-four million, seven hundred ninety-three thousand, one hundred sixty-one".