211165055 has 8 divisors (see below), whose sum is σ = 253536144. Its totient is φ = 168840000.

The previous prime is 211164971. The next prime is 211165061. The reversal of 211165055 is 550561112.

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

It is not a de Polignac number, because 211165055 - 2⁸ = 211164799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 446 + ... + 20555.

It is an arithmetic number, because the mean of its divisors is an integer number (31692018).

Almost surely, 2^211165055 is an apocalyptic number.

211165055 is a deficient number, since it is larger than the sum of its proper divisors (42371089).

211165055 is a wasteful number, since it uses less digits than its factorization.

211165055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23017.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 211165055 is about 14531.5193630948. The cubic root of 211165055 is about 595.4893744772.

The spelling of 211165055 in words is "two hundred eleven million, one hundred sixty-five thousand, fifty-five".