51324560117 has 2 divisors, whose sum is σ = 51324560118. Its totient is φ = 51324560116.

The previous prime is 51324560087. The next prime is 51324560123. The reversal of 51324560117 is 71106542315.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29011968241 + 22312591876 = 170329^2 + 149374^2 .

It is a cyclic number.

It is not a de Polignac number, because 51324560117 - 2²² = 51320365813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51324560167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25662280058 + 25662280059.

It is an arithmetic number, because the mean of its divisors is an integer number (25662280059).

Almost surely, 2^51324560117 is an apocalyptic number.

It is an amenable number.

51324560117 is a deficient number, since it is larger than the sum of its proper divisors (1).

51324560117 is an equidigital number, since it uses as much as digits as its factorization.

51324560117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 51324560117 in words is "fifty-one billion, three hundred twenty-four million, five hundred sixty thousand, one hundred seventeen".