212546 has 4 divisors (see below), whose sum is σ = 318822. Its totient is φ = 106272.

The previous prime is 212507. The next prime is 212557. The reversal of 212546 is 645212.

It is a happy number.

212546 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 can be written as a sum of positive squares in only one way, i.e., 212521 + 25 = 461^2 + 5^2 .

It is a d-powerful number, because it can be written as 2¹¹ + 1 + 5⁷ + 2¹⁷ + 4 + 6⁴ .

It is an unprimeable number.

212546 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53135 + ... + 53138.

212546 is a Friedman number, since it can be written as 461^2+5^2, using all its digits and the basic arithmetic operations.

2²¹²⁵⁴⁶ is an apocalyptic number.

212546 is a deficient number, since it is larger than the sum of its proper divisors (106276).

212546 is a wasteful number, since it uses less digits than its factorization.

212546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106275.

The product of its digits is 480, while the sum is 20.

The square root of 212546 is about 461.0271141701. The cubic root of 212546 is about 59.6784651858.

Adding to 212546 its reverse (645212), we get a palindrome (857758).

The spelling of 212546 in words is "two hundred twelve thousand, five hundred forty-six".