478485581 has 24 divisors (see below), whose sum is σ = 564332544. Its totient is φ = 397353600.

The previous prime is 478485571. The next prime is 478485613. The reversal of 478485581 is 185584874.

It is not a de Polignac number, because 478485581 - 2¹⁴ = 478469197 is a prime.

It is a super-2 number, since 2×478485581² = 457896902449815122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478485551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3767540 + ... + 3767666.

It is an arithmetic number, because the mean of its divisors is an integer number (23513856).

Almost surely, 2^478485581 is an apocalyptic number.

It is an amenable number.

478485581 is a deficient number, since it is larger than the sum of its proper divisors (85846963).

478485581 is a wasteful number, since it uses less digits than its factorization.

478485581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 308 counting only the distinct ones).

The product of its digits is 1433600, while the sum is 50.

The square root of 478485581 is about 21874.3132692206. The cubic root of 478485581 is about 782.1492232286.

The spelling of 478485581 in words is "four hundred seventy-eight million, four hundred eighty-five thousand, five hundred eighty-one".