55020666017 has 4 divisors (see below), whose sum is σ = 55587889476. Its totient is φ = 54453442560.

The previous prime is 55020666011. The next prime is 55020666023. The reversal of 55020666017 is 71066602055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71066602055 = 5 ⋅14213320411.

It is an interprime number because it is at equal distance from previous prime (55020666011) and next prime (55020666023).

It can be written as a sum of positive squares in 2 ways, for example, as 10921086016 + 44099580001 = 104504^2 + 209999^2 .

It is a cyclic number.

It is not a de Polignac number, because 55020666017 - 2²⁴ = 55003888801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55020666011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283611584 + ... + 283611777.

It is an arithmetic number, because the mean of its divisors is an integer number (13896972369).

Almost surely, 2^55020666017 is an apocalyptic number.

It is an amenable number.

55020666017 is a deficient number, since it is larger than the sum of its proper divisors (567223459).

55020666017 is an equidigital number, since it uses as much as digits as its factorization.

55020666017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567223458.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 55020666017 in words is "fifty-five billion, twenty million, six hundred sixty-six thousand, seventeen".