51023305537 has 2 divisors, whose sum is σ = 51023305538. Its totient is φ = 51023305536.

The previous prime is 51023305469. The next prime is 51023305579. The reversal of 51023305537 is 73550332015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46438526016 + 4584779521 = 215496^2 + 67711^2 .

It is a cyclic number.

It is not a de Polignac number, because 51023305537 - 2¹¹ = 51023303489 is a prime.

It is not a weakly prime, because it can be changed into another prime (51023305037) 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, 25511652768 + 25511652769.

It is an arithmetic number, because the mean of its divisors is an integer number (25511652769).

Almost surely, 2^51023305537 is an apocalyptic number.

It is an amenable number.

51023305537 is a deficient number, since it is larger than the sum of its proper divisors (1).

51023305537 is an equidigital number, since it uses as much as digits as its factorization.

51023305537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47250, while the sum is 34.

The spelling of 51023305537 in words is "fifty-one billion, twenty-three million, three hundred five thousand, five hundred thirty-seven".