475281 has 16 divisors (see below), whose sum is σ = 729600. Its totient is φ = 305424.

The previous prime is 475273. The next prime is 475283. The reversal of 475281 is 182574.

It is not a de Polignac number, because 475281 - 2³ = 475273 is a prime.

It is a super-2 number, since 2×475281² = 451784057922, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

475281 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 475281.

It is not an unprimeable number, because it can be changed into a prime (475283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480 + ... + 1086.

It is an arithmetic number, because the mean of its divisors is an integer number (45600).

475281 is a Friedman number, since it can be written as (21+8)*(5+4^7), using all its digits and the basic arithmetic operations.

2⁴⁷⁵²⁸¹ is an apocalyptic number.

It is an amenable number.

475281 is a deficient number, since it is larger than the sum of its proper divisors (254319).

475281 is a wasteful number, since it uses less digits than its factorization.

475281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 639 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 475281 is about 689.4062662901. The cubic root of 475281 is about 78.0399203937.

The spelling of 475281 in words is "four hundred seventy-five thousand, two hundred eighty-one".