51756260533 has 2 divisors, whose sum is σ = 51756260534. Its totient is φ = 51756260532.

The previous prime is 51756260519. The next prime is 51756260537. The reversal of 51756260533 is 33506265715.

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., 44134446724 + 7621813809 = 210082^2 + 87303^2 .

It is a cyclic number.

It is not a de Polignac number, because 51756260533 - 2²¹ = 51754163381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51756260533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51756260537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25878130266 + 25878130267.

It is an arithmetic number, because the mean of its divisors is an integer number (25878130267).

Almost surely, 2^51756260533 is an apocalyptic number.

It is an amenable number.

51756260533 is a deficient number, since it is larger than the sum of its proper divisors (1).

51756260533 is an equidigital number, since it uses as much as digits as its factorization.

51756260533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567000, while the sum is 43.

The spelling of 51756260533 in words is "fifty-one billion, seven hundred fifty-six million, two hundred sixty thousand, five hundred thirty-three".