845081 has 4 divisors (see below), whose sum is σ = 851664. Its totient is φ = 838500.

The previous prime is 845069. The next prime is 845083. The reversal of 845081 is 180548.

845081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 845081 - 2⁶ = 845017 is a prime.

It is a super-2 number, since 2×845081² = 1428323793122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 845081.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 845081.

It is not an unprimeable number, because it can be changed into a prime (845083) 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, 3095 + ... + 3356.

It is an arithmetic number, because the mean of its divisors is an integer number (212916).

2⁸⁴⁵⁰⁸¹ is an apocalyptic number.

It is an amenable number.

845081 is a deficient number, since it is larger than the sum of its proper divisors (6583).

845081 is a wasteful number, since it uses less digits than its factorization.

845081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6582.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 845081 is about 919.2828726785. The cubic root of 845081 is about 94.5437401910.

The spelling of 845081 in words is "eight hundred forty-five thousand, eighty-one".