55315754163217 has 2 divisors, whose sum is σ = 55315754163218. Its totient is φ = 55315754163216.

The previous prime is 55315754163161. The next prime is 55315754163259. The reversal of 55315754163217 is 71236145751355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34403022737281 + 20912731425936 = 5865409^2 + 4573044^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55315754163217 is a prime.

It is not a weakly prime, because it can be changed into another prime (55315754163517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27657877081608 + 27657877081609.

It is an arithmetic number, because the mean of its divisors is an integer number (27657877081609).

Almost surely, 2^{55315754163217} is an apocalyptic number.

It is an amenable number.

55315754163217 is a deficient number, since it is larger than the sum of its proper divisors (1).

55315754163217 is an equidigital number, since it uses as much as digits as its factorization.

55315754163217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13230000, while the sum is 55.

The spelling of 55315754163217 in words is "fifty-five trillion, three hundred fifteen billion, seven hundred fifty-four million, one hundred sixty-three thousand, two hundred seventeen".