206443453 has 4 divisors (see below), whose sum is σ = 208069120. Its totient is φ = 204817788.

The previous prime is 206443441. The next prime is 206443481. The reversal of 206443453 is 354344602.

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 206443453 - 2¹³ = 206435261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206443403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 812643 + ... + 812896.

It is an arithmetic number, because the mean of its divisors is an integer number (52017280).

Almost surely, 2^206443453 is an apocalyptic number.

It is an amenable number.

206443453 is a deficient number, since it is larger than the sum of its proper divisors (1625667).

206443453 is a wasteful number, since it uses less digits than its factorization.

206443453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625666.

The product of its (nonzero) digits is 34560, while the sum is 31.

The square root of 206443453 is about 14368.1402067213. The cubic root of 206443453 is about 591.0175421837.

The spelling of 206443453 in words is "two hundred six million, four hundred forty-three thousand, four hundred fifty-three".