212755 has 8 divisors (see below), whose sum is σ = 270432. Its totient is φ = 160128.

The previous prime is 212701. The next prime is 212777. The reversal of 212755 is 557212.

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 212755 - 2⁷ = 212627 is a prime.

It is a Duffinian number.

212755 is a lucky number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1167 + ... + 1336.

It is an arithmetic number, because the mean of its divisors is an integer number (33804).

2²¹²⁷⁵⁵ is an apocalyptic number.

212755 is a deficient number, since it is larger than the sum of its proper divisors (57677).

212755 is a wasteful number, since it uses less digits than its factorization.

212755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525.

The product of its digits is 700, while the sum is 22.

The square root of 212755 is about 461.2537262722. The cubic root of 212755 is about 59.6980197187.

Adding to 212755 its reverse (557212), we get a palindrome (769967).

The spelling of 212755 in words is "two hundred twelve thousand, seven hundred fifty-five".