2166255055 has 8 divisors (see below), whose sum is σ = 2638305072. Its totient is φ = 1707138048.

The previous prime is 2166255043. The next prime is 2166255083. The reversal of 2166255055 is 5505526612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2166255055 - 2¹¹ = 2166253007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3232882 + ... + 3233551.

It is an arithmetic number, because the mean of its divisors is an integer number (329788134).

Almost surely, 2^2166255055 is an apocalyptic number.

2166255055 is a deficient number, since it is larger than the sum of its proper divisors (472050017).

2166255055 is an equidigital number, since it uses as much as digits as its factorization.

2166255055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6466505.

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 2166255055 is about 46543.0451840014. The cubic root of 2166255055 is about 1293.9073992104.

The spelling of 2166255055 in words is "two billion, one hundred sixty-six million, two hundred fifty-five thousand, fifty-five".