51655048889 has 2 divisors, whose sum is σ = 51655048890. Its totient is φ = 51655048888.

The previous prime is 51655048853. The next prime is 51655048903. The reversal of 51655048889 is 98884055615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51566688889 + 88360000 = 227083^2 + 9400^2 .

It is a cyclic number.

It is not a de Polignac number, because 51655048889 - 2⁸ = 51655048633 is a prime.

It is not a weakly prime, because it can be changed into another prime (51655045889) 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, 25827524444 + 25827524445.

It is an arithmetic number, because the mean of its divisors is an integer number (25827524445).

Almost surely, 2^51655048889 is an apocalyptic number.

It is an amenable number.

51655048889 is a deficient number, since it is larger than the sum of its proper divisors (1).

51655048889 is an equidigital number, since it uses as much as digits as its factorization.

51655048889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824000, while the sum is 59.

The spelling of 51655048889 in words is "fifty-one billion, six hundred fifty-five million, forty-eight thousand, eight hundred eighty-nine".