485811 has 16 divisors (see below), whose sum is σ = 758400. Its totient is φ = 306504.

The previous prime is 485777. The next prime is 485819. The reversal of 485811 is 118584.

It is not a de Polignac number, because 485811 - 2¹⁰ = 484787 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 485811.

It is not an unprimeable number, because it can be changed into a prime (485819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40 + ... + 986.

It is an arithmetic number, because the mean of its divisors is an integer number (47400).

2⁴⁸⁵⁸¹¹ is an apocalyptic number.

485811 is a deficient number, since it is larger than the sum of its proper divisors (272589).

485811 is a wasteful number, since it uses less digits than its factorization.

485811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975 (or 969 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 485811 is about 697.0014347188. The cubic root of 485811 is about 78.6120487327.

It can be divided in two parts, 485 and 811, that added together give a 4-th power (1296 = 6⁴).

The spelling of 485811 in words is "four hundred eighty-five thousand, eight hundred eleven".