805530203 has 4 divisors (see below), whose sum is σ = 805655088. Its totient is φ = 805405320.

The previous prime is 805530197. The next prime is 805530217. The reversal of 805530203 is 302035508.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-805530203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (805530233) 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, 52208 + ... + 65853.

It is an arithmetic number, because the mean of its divisors is an integer number (201413772).

Almost surely, 2^805530203 is an apocalyptic number.

805530203 is a deficient number, since it is larger than the sum of its proper divisors (124885).

805530203 is a wasteful number, since it uses less digits than its factorization.

805530203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124884.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 805530203 is about 28381.8639803661. The cubic root of 805530203 is about 930.4519339677.

The spelling of 805530203 in words is "eight hundred five million, five hundred thirty thousand, two hundred three".