51528930529 has 2 divisors, whose sum is σ = 51528930530. Its totient is φ = 51528930528.

The previous prime is 51528930527. The next prime is 51528930539. The reversal of 51528930529 is 92503982515.

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., 51118949025 + 409981504 = 226095^2 + 20248^2 .

It is a cyclic number.

It is not a de Polignac number, because 51528930529 - 2¹ = 51528930527 is a prime.

Together with 51528930527, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51528930527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25764465264 + 25764465265.

It is an arithmetic number, because the mean of its divisors is an integer number (25764465265).

Almost surely, 2^51528930529 is an apocalyptic number.

It is an amenable number.

51528930529 is a deficient number, since it is larger than the sum of its proper divisors (1).

51528930529 is an equidigital number, since it uses as much as digits as its factorization.

51528930529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972000, while the sum is 49.

The spelling of 51528930529 in words is "fifty-one billion, five hundred twenty-eight million, nine hundred thirty thousand, five hundred twenty-nine".