213055 has 4 divisors (see below), whose sum is σ = 255672. Its totient is φ = 170440.

The previous prime is 213043. The next prime is 213067. The reversal of 213055 is 550312.

213055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (213043) and next prime (213067).

It is not a de Polignac number, because 213055 - 2⁵ = 213023 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 6.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21301 + ... + 21310.

It is an arithmetic number, because the mean of its divisors is an integer number (63918).

2²¹³⁰⁵⁵ is an apocalyptic number.

213055 is a deficient number, since it is larger than the sum of its proper divisors (42617).

213055 is an equidigital number, since it uses as much as digits as its factorization.

213055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42616.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 213055 is about 461.5788123387. The cubic root of 213055 is about 59.7260660547.

Adding to 213055 its reverse (550312), we get a palindrome (763367).

The spelling of 213055 in words is "two hundred thirteen thousand, fifty-five".