478657145 has 4 divisors (see below), whose sum is σ = 574388580. Its totient is φ = 382925712.

The previous prime is 478657141. The next prime is 478657159. The reversal of 478657145 is 541756874.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48219136 + 430438009 = 6944^2 + 20747^2 .

It is a cyclic number.

It is not a de Polignac number, because 478657145 - 2² = 478657141 is a prime.

It is a super-2 number, since 2×478657145² = 458225324919102050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 478657145.

It is not an unprimeable number, because it can be changed into a prime (478657141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47865710 + ... + 47865719.

It is an arithmetic number, because the mean of its divisors is an integer number (143597145).

Almost surely, 2^478657145 is an apocalyptic number.

It is an amenable number.

478657145 is a deficient number, since it is larger than the sum of its proper divisors (95731435).

478657145 is an equidigital number, since it uses as much as digits as its factorization.

478657145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95731434.

The product of its digits is 940800, while the sum is 47.

The square root of 478657145 is about 21878.2345037254. The cubic root of 478657145 is about 782.2426935579.

The spelling of 478657145 in words is "four hundred seventy-eight million, six hundred fifty-seven thousand, one hundred forty-five".