51552986977 has 2 divisors, whose sum is σ = 51552986978. Its totient is φ = 51552986976.

The previous prime is 51552986911. The next prime is 51552986983. The reversal of 51552986977 is 77968925515.

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., 37847367936 + 13705619041 = 194544^2 + 117071^2 .

It is a cyclic number.

It is not a de Polignac number, because 51552986977 - 2¹⁵ = 51552954209 is a prime.

It is not a weakly prime, because it can be changed into another prime (51552986077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25776493488 + 25776493489.

It is an arithmetic number, because the mean of its divisors is an integer number (25776493489).

Almost surely, 2^51552986977 is an apocalyptic number.

It is an amenable number.

51552986977 is a deficient number, since it is larger than the sum of its proper divisors (1).

51552986977 is an equidigital number, since it uses as much as digits as its factorization.

51552986977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628000, while the sum is 64.

The spelling of 51552986977 in words is "fifty-one billion, five hundred fifty-two million, nine hundred eighty-six thousand, nine hundred seventy-seven".