212453 has 2 divisors, whose sum is σ = 212454. Its totient is φ = 212452.

The previous prime is 212447. The next prime is 212461. The reversal of 212453 is 354212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187489 + 24964 = 433^2 + 158^2 .

It is a cyclic number.

It is not a de Polignac number, because 212453 - 2⁴ = 212437 is a prime.

It is a Chen prime.

It is equal to p₁₉₀₀₇ and since 212453 and 19007 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106226 + 106227.

It is an arithmetic number, because the mean of its divisors is an integer number (106227).

2²¹²⁴⁵³ is an apocalyptic number.

It is an amenable number.

212453 is a deficient number, since it is larger than the sum of its proper divisors (1).

212453 is an equidigital number, since it uses as much as digits as its factorization.

212453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 17.

The square root of 212453 is about 460.9262413879. The cubic root of 212453 is about 59.6697597653.

Adding to 212453 its reverse (354212), we get a palindrome (566665).

The spelling of 212453 in words is "two hundred twelve thousand, four hundred fifty-three".