478486081 has 2 divisors, whose sum is σ = 478486082. Its totient is φ = 478486080.

The previous prime is 478486079. The next prime is 478486087. The reversal of 478486081 is 180684874.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 295289856 + 183196225 = 17184^2 + 13535^2 .

It is a cyclic number.

It is not a de Polignac number, because 478486081 - 2¹ = 478486079 is a prime.

It is a super-2 number, since 2×478486081² = 457897859421477122, which contains 22 as substring.

Together with 478486079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (478486087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239243040 + 239243041.

It is an arithmetic number, because the mean of its divisors is an integer number (239243041).

Almost surely, 2^478486081 is an apocalyptic number.

It is an amenable number.

478486081 is a deficient number, since it is larger than the sum of its proper divisors (1).

478486081 is an equidigital number, since it uses as much as digits as its factorization.

478486081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 344064, while the sum is 46.

The square root of 478486081 is about 21874.3246981478. The cubic root of 478486081 is about 782.1494956677.

The spelling of 478486081 in words is "four hundred seventy-eight million, four hundred eighty-six thousand, eighty-one".