478581 has 8 divisors (see below), whose sum is σ = 647904. Its totient is φ = 314160.

The previous prime is 478579. The next prime is 478589. The reversal of 478581 is 185874.

It is a happy number.

478581 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 478581 - 2¹ = 478579 is a prime.

It is a super-2 number, since 2×478581² = 458079547122, which contains 22 as substring.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

478581 is strictly pandigital in base 7.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 990 + ... + 1391.

It is an arithmetic number, because the mean of its divisors is an integer number (80988).

2⁴⁷⁸⁵⁸¹ is an apocalyptic number.

It is an amenable number.

478581 is a deficient number, since it is larger than the sum of its proper divisors (169323).

478581 is a wasteful number, since it uses less digits than its factorization.

478581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451.

The product of its digits is 8960, while the sum is 33.

The square root of 478581 is about 691.7954900113. The cubic root of 478581 is about 78.2201211515.

The spelling of 478581 in words is "four hundred seventy-eight thousand, five hundred eighty-one".