51353522522461 has 2 divisors, whose sum is σ = 51353522522462. Its totient is φ = 51353522522460.

The previous prime is 51353522522417. The next prime is 51353522522509. The reversal of 51353522522461 is 16422522535315.

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., 47508417243225 + 3845105279236 = 6892635^2 + 1960894^2 .

It is a cyclic number.

It is not a de Polignac number, because 51353522522461 - 2²⁷ = 51353388304733 is a prime.

It is a super-3 number, since 3×51353522522461³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51353522522261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25676761261230 + 25676761261231.

It is an arithmetic number, because the mean of its divisors is an integer number (25676761261231).

Almost surely, 2^{51353522522461} is an apocalyptic number.

It is an amenable number.

51353522522461 is a deficient number, since it is larger than the sum of its proper divisors (1).

51353522522461 is an equidigital number, since it uses as much as digits as its factorization.

51353522522461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160000, while the sum is 46.

The spelling of 51353522522461 in words is "fifty-one trillion, three hundred fifty-three billion, five hundred twenty-two million, five hundred twenty-two thousand, four hundred sixty-one".