2055217217 has 2 divisors, whose sum is σ = 2055217218. Its totient is φ = 2055217216.

The previous prime is 2055217183. The next prime is 2055217223. The reversal of 2055217217 is 7127125502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1377968641 + 677248576 = 37121^2 + 26024^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2055217217 is a prime.

It is not a weakly prime, because it can be changed into another prime (2055217267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1027608608 + 1027608609.

It is an arithmetic number, because the mean of its divisors is an integer number (1027608609).

Almost surely, 2^2055217217 is an apocalyptic number.

It is an amenable number.

2055217217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2055217217 is an equidigital number, since it uses as much as digits as its factorization.

2055217217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 2055217217 is about 45334.5036037674. The cubic root of 2055217217 is about 1271.4108397927.

The spelling of 2055217217 in words is "two billion, fifty-five million, two hundred seventeen thousand, two hundred seventeen".