475891 has 4 divisors (see below), whose sum is σ = 512512. Its totient is φ = 439272.

The previous prime is 475889. The next prime is 475897. The reversal of 475891 is 198574.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 475891 - 2¹ = 475889 is a prime.

475891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (475897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18291 + ... + 18316.

It is an arithmetic number, because the mean of its divisors is an integer number (128128).

2⁴⁷⁵⁸⁹¹ is an apocalyptic number.

475891 is a deficient number, since it is larger than the sum of its proper divisors (36621).

475891 is a wasteful number, since it uses less digits than its factorization.

475891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36620.

The product of its digits is 10080, while the sum is 34.

The square root of 475891 is about 689.8485341001. The cubic root of 475891 is about 78.0732929319.

The spelling of 475891 in words is "four hundred seventy-five thousand, eight hundred ninety-one".