51513024533 has 2 divisors, whose sum is σ = 51513024534. Its totient is φ = 51513024532.

The previous prime is 51513024529. The next prime is 51513024557. The reversal of 51513024533 is 33542031515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35848499569 + 15664524964 = 189337^2 + 125158^2 .

It is a cyclic number.

It is not a de Polignac number, because 51513024533 - 2² = 51513024529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51513024533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51513024733) 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, 25756512266 + 25756512267.

It is an arithmetic number, because the mean of its divisors is an integer number (25756512267).

Almost surely, 2^51513024533 is an apocalyptic number.

It is an amenable number.

51513024533 is a deficient number, since it is larger than the sum of its proper divisors (1).

51513024533 is an equidigital number, since it uses as much as digits as its factorization.

51513024533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 32.

The spelling of 51513024533 in words is "fifty-one billion, five hundred thirteen million, twenty-four thousand, five hundred thirty-three".