478471581 has 12 divisors (see below), whose sum is σ = 789857952. Its totient is φ = 273412296.

The previous prime is 478471573. The next prime is 478471583. The reversal of 478471581 is 185174874.

It is not a de Polignac number, because 478471581 - 2³ = 478471573 is a prime.

It is a super-2 number, since 2×478471581² = 457870107649279122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478471583) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3797331 + ... + 3797456.

It is an arithmetic number, because the mean of its divisors is an integer number (65821496).

Almost surely, 2^478471581 is an apocalyptic number.

It is an amenable number.

478471581 is a deficient number, since it is larger than the sum of its proper divisors (311386371).

478471581 is a wasteful number, since it uses less digits than its factorization.

478471581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7594800 (or 7594797 counting only the distinct ones).

The product of its digits is 250880, while the sum is 45.

The square root of 478471581 is about 21873.9932568336. The cubic root of 478471581 is about 782.1415948581.

The spelling of 478471581 in words is "four hundred seventy-eight million, four hundred seventy-one thousand, five hundred eighty-one".