51504983927 has 2 divisors, whose sum is σ = 51504983928. Its totient is φ = 51504983926.

The previous prime is 51504983923. The next prime is 51504983977. The reversal of 51504983927 is 72938940515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51504983927 - 2² = 51504983923 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51504983923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25752491963 + 25752491964.

It is an arithmetic number, because the mean of its divisors is an integer number (25752491964).

Almost surely, 2^51504983927 is an apocalyptic number.

51504983927 is a deficient number, since it is larger than the sum of its proper divisors (1).

51504983927 is an equidigital number, since it uses as much as digits as its factorization.

51504983927 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2721600, while the sum is 53.

The spelling of 51504983927 in words is "fifty-one billion, five hundred four million, nine hundred eighty-three thousand, nine hundred twenty-seven".