475581 has 4 divisors (see below), whose sum is σ = 634112. Its totient is φ = 317052.

The previous prime is 475549. The next prime is 475583. The reversal of 475581 is 185574.

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 not a de Polignac number, because 475581 - 2⁵ = 475549 is a prime.

It is a super-2 number, since 2×475581² = 452354575122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 475581.

It is not an unprimeable number, because it can be changed into a prime (475583) 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, 79261 + ... + 79266.

It is an arithmetic number, because the mean of its divisors is an integer number (158528).

2⁴⁷⁵⁵⁸¹ is an apocalyptic number.

It is an amenable number.

475581 is a deficient number, since it is larger than the sum of its proper divisors (158531).

475581 is a wasteful number, since it uses less digits than its factorization.

475581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158530.

The product of its digits is 5600, while the sum is 30.

The square root of 475581 is about 689.6238104938. The cubic root of 475581 is about 78.0563366835.

The spelling of 475581 in words is "four hundred seventy-five thousand, five hundred eighty-one".