475981 has 4 divisors (see below), whose sum is σ = 519264. Its totient is φ = 432700.

The previous prime is 475973. The next prime is 475991. The reversal of 475981 is 189574.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 475981 - 2³ = 475973 is a prime.

It is a super-2 number, since 2×475981² = 453115824722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475921) 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, 21625 + ... + 21646.

It is an arithmetic number, because the mean of its divisors is an integer number (129816).

2⁴⁷⁵⁹⁸¹ is an apocalyptic number.

It is an amenable number.

475981 is a deficient number, since it is larger than the sum of its proper divisors (43283).

475981 is a wasteful number, since it uses less digits than its factorization.

475981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43282.

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

The square root of 475981 is about 689.9137627269. The cubic root of 475981 is about 78.0782143344.

The spelling of 475981 in words is "four hundred seventy-five thousand, nine hundred eighty-one".