211056 has 20 divisors (see below), whose sum is σ = 545352. Its totient is φ = 70336.

The previous prime is 211051. The next prime is 211061. The reversal of 211056 is 650112.

It is an interprime number because it is at equal distance from previous prime (211051) and next prime (211061).

It is a zygodrome in base 2.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2151 + ... + 2246.

2²¹¹⁰⁵⁶ is an apocalyptic number.

It is an amenable number.

211056 is an abundant number, since it is smaller than the sum of its proper divisors (334296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211056 is a wasteful number, since it uses less digits than its factorization.

211056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4408 (or 4402 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 211056 is about 459.4083151185. The cubic root of 211056 is about 59.5386844450.

Adding to 211056 its reverse (650112), we get a palindrome (861168).

The spelling of 211056 in words is "two hundred eleven thousand, fifty-six".