212534453 has 4 divisors (see below), whose sum is σ = 215527968. Its totient is φ = 209540940.

The previous prime is 212534393. The next prime is 212534473. The reversal of 212534453 is 354435212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212534453 - 2⁶ = 212534389 is a prime.

It is a super-3 number, since 3×212534453³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212534473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1496651 + ... + 1496792.

It is an arithmetic number, because the mean of its divisors is an integer number (53881992).

Almost surely, 2^212534453 is an apocalyptic number.

It is an amenable number.

212534453 is a deficient number, since it is larger than the sum of its proper divisors (2993515).

212534453 is an equidigital number, since it uses as much as digits as its factorization.

212534453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2993514.

The product of its digits is 14400, while the sum is 29.

The square root of 212534453 is about 14578.5614173690. The cubic root of 212534453 is about 596.7738444769.

Adding to 212534453 its reverse (354435212), we get a palindrome (566969665).

The spelling of 212534453 in words is "two hundred twelve million, five hundred thirty-four thousand, four hundred fifty-three".