845211 has 4 divisors (see below), whose sum is σ = 1126952. Its totient is φ = 563472.

The previous prime is 845209. The next prime is 845219. The reversal of 845211 is 112548.

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

It is not a de Polignac number, because 845211 - 2¹ = 845209 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (845219) 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, 140866 + ... + 140871.

It is an arithmetic number, because the mean of its divisors is an integer number (281738).

2⁸⁴⁵²¹¹ is an apocalyptic number.

845211 is a deficient number, since it is larger than the sum of its proper divisors (281741).

845211 is a wasteful number, since it uses less digits than its factorization.

845211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281740.

The product of its digits is 320, while the sum is 21.

The square root of 845211 is about 919.3535772487. The cubic root of 845211 is about 94.5485878747.

Adding to 845211 its reverse (112548), we get a palindrome (957759).

The spelling of 845211 in words is "eight hundred forty-five thousand, two hundred eleven".