478081 has 4 divisors (see below), whose sum is σ = 479700. Its totient is φ = 476464.

The previous prime is 478069. The next prime is 478087. The reversal of 478081 is 180874.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 180874 = 2 ⋅90437.

It can be written as a sum of positive squares in 2 ways, for example, as 330625 + 147456 = 575^2 + 384^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478081 is a prime.

It is a super-2 number, since 2×478081² = 457122885122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478087) 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, 226 + ... + 1003.

It is an arithmetic number, because the mean of its divisors is an integer number (119925).

2⁴⁷⁸⁰⁸¹ is an apocalyptic number.

It is an amenable number.

478081 is a deficient number, since it is larger than the sum of its proper divisors (1619).

478081 is a wasteful number, since it uses less digits than its factorization.

478081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 478081 is about 691.4340170978. The cubic root of 478081 is about 78.1928713661.

It can be divided in two parts, 47 and 8081, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 478081 in words is "four hundred seventy-eight thousand, eighty-one".