211055 has 16 divisors (see below), whose sum is σ = 290304. Its totient is φ = 145920.

The previous prime is 211051. The next prime is 211061. The reversal of 211055 is 550112.

211055 = T₁₄₉ + T₁₅₀ + ... + T₁₆₅.

It is not a de Polignac number, because 211055 - 2² = 211051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1010 + ... + 1200.

It is an arithmetic number, because the mean of its divisors is an integer number (18144).

2²¹¹⁰⁵⁵ is an apocalyptic number.

211055 is a deficient number, since it is larger than the sum of its proper divisors (79249).

211055 is a wasteful number, since it uses less digits than its factorization.

211055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 211055 is about 459.4072267607. The cubic root of 211055 is about 59.5385904119.

Adding to 211055 its reverse (550112), we get a palindrome (761167).

It can be divided in two parts, 21 and 1055, that multiplied together give a triangular number (22155 = T₂₁₀).

The spelling of 211055 in words is "two hundred eleven thousand, fifty-five".