805512 has 16 divisors (see below), whose sum is σ = 2013840. Its totient is φ = 268496.

The previous prime is 805507. The next prime is 805517. The reversal of 805512 is 215508.

It is an interprime number because it is at equal distance from previous prime (805507) and next prime (805517).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 805512.

It is not an unprimeable number, because it can be changed into a prime (805517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16758 + ... + 16805.

It is an arithmetic number, because the mean of its divisors is an integer number (125865).

2⁸⁰⁵⁵¹² is an apocalyptic number.

It is an amenable number.

805512 is an abundant number, since it is smaller than the sum of its proper divisors (1208328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

805512 is a wasteful number, since it uses less digits than its factorization.

805512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33572 (or 33568 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 805512 is about 897.5032033369. The cubic root of 805512 is about 93.0444925274.

The spelling of 805512 in words is "eight hundred five thousand, five hundred twelve".