51422352517 has 2 divisors, whose sum is σ = 51422352518. Its totient is φ = 51422352516.

The previous prime is 51422352481. The next prime is 51422352547. The reversal of 51422352517 is 71525322415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49447972161 + 1974380356 = 222369^2 + 44434^2 .

It is a cyclic number.

It is not a de Polignac number, because 51422352517 - 2⁷ = 51422352389 is a prime.

It is a super-5 number, since 5×51422352517⁵ (a number of 55 digits) contains 55555 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51422352547) 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, 25711176258 + 25711176259.

It is an arithmetic number, because the mean of its divisors is an integer number (25711176259).

Almost surely, 2^51422352517 is an apocalyptic number.

It is an amenable number.

51422352517 is a deficient number, since it is larger than the sum of its proper divisors (1).

51422352517 is an equidigital number, since it uses as much as digits as its factorization.

51422352517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84000, while the sum is 37.

The spelling of 51422352517 in words is "fifty-one billion, four hundred twenty-two million, three hundred fifty-two thousand, five hundred seventeen".