206503453 has 16 divisors (see below), whose sum is σ = 232646400. Its totient is φ = 181868544.

The previous prime is 206503441. The next prime is 206503459. The reversal of 206503453 is 354305602.

It is not a de Polignac number, because 206503453 - 2⁹ = 206502941 is a prime.

It is a super-2 number, since 2×206503453² = 85287352201846418, which contains 22 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 (206503459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178525 + ... + 179677.

It is an arithmetic number, because the mean of its divisors is an integer number (14540400).

Almost surely, 2^206503453 is an apocalyptic number.

206503453 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

206503453 is a deficient number, since it is larger than the sum of its proper divisors (26142947).

206503453 is a wasteful number, since it uses less digits than its factorization.

206503453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 206503453 is about 14370.2280079336. The cubic root of 206503453 is about 591.0747937251.

The spelling of 206503453 in words is "two hundred six million, five hundred three thousand, four hundred fifty-three".