800559 has 6 divisors (see below), whose sum is σ = 1156376. Its totient is φ = 533700.

The previous prime is 800557. The next prime is 800573. The reversal of 800559 is 955008.

It is not a de Polignac number, because 800559 - 2¹ = 800557 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800557) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44467 + ... + 44484.

2⁸⁰⁰⁵⁵⁹ is an apocalyptic number.

800559 is a deficient number, since it is larger than the sum of its proper divisors (355817).

800559 is a wasteful number, since it uses less digits than its factorization.

800559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88957 (or 88954 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 800559 is about 894.7396269307. The cubic root of 800559 is about 92.8533937061.

Subtracting 800559 from its reverse (955008), we obtain a square (154449 = 393²).

The spelling of 800559 in words is "eight hundred thousand, five hundred fifty-nine".