51340521233 has 2 divisors, whose sum is σ = 51340521234. Its totient is φ = 51340521232.

The previous prime is 51340521227. The next prime is 51340521247. The reversal of 51340521233 is 33212504315.

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., 48290941504 + 3049579729 = 219752^2 + 55223^2 .

It is a cyclic number.

It is not a de Polignac number, because 51340521233 - 2⁴ = 51340521217 is a prime.

It is a super-4 number, since 4×51340521233⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 51340521196 and 51340521205.

It is not a weakly prime, because it can be changed into another prime (51340521733) 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, 25670260616 + 25670260617.

It is an arithmetic number, because the mean of its divisors is an integer number (25670260617).

Almost surely, 2^51340521233 is an apocalyptic number.

It is an amenable number.

51340521233 is a deficient number, since it is larger than the sum of its proper divisors (1).

51340521233 is an equidigital number, since it uses as much as digits as its factorization.

51340521233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 29.

The spelling of 51340521233 in words is "fifty-one billion, three hundred forty million, five hundred twenty-one thousand, two hundred thirty-three".