51835528861 has 2 divisors, whose sum is σ = 51835528862. Its totient is φ = 51835528860.

The previous prime is 51835528859. The next prime is 51835528867. The reversal of 51835528861 is 16882553815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29861913636 + 21973615225 = 172806^2 + 148235^2 .

It is a cyclic number.

It is not a de Polignac number, because 51835528861 - 2¹ = 51835528859 is a prime.

Together with 51835528859, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 51835528799 and 51835528808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51835528867) 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, 25917764430 + 25917764431.

It is an arithmetic number, because the mean of its divisors is an integer number (25917764431).

Almost surely, 2^51835528861 is an apocalyptic number.

It is an amenable number.

51835528861 is a deficient number, since it is larger than the sum of its proper divisors (1).

51835528861 is an equidigital number, since it uses as much as digits as its factorization.

51835528861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304000, while the sum is 52.

The spelling of 51835528861 in words is "fifty-one billion, eight hundred thirty-five million, five hundred twenty-eight thousand, eight hundred sixty-one".