478145 has 4 divisors (see below), whose sum is σ = 573780. Its totient is φ = 382512.

The previous prime is 478139. The next prime is 478157. The reversal of 478145 is 541874.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541874 = 2 ⋅270937.

It can be written as a sum of positive squares in 2 ways, for example, as 59536 + 418609 = 244^2 + 647^2 .

It is a cyclic number.

It is not a de Polignac number, because 478145 - 2⁴ = 478129 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 478145.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47810 + ... + 47819.

It is an arithmetic number, because the mean of its divisors is an integer number (143445).

2⁴⁷⁸¹⁴⁵ is an apocalyptic number.

It is an amenable number.

478145 is a deficient number, since it is larger than the sum of its proper divisors (95635).

478145 is an equidigital number, since it uses as much as digits as its factorization.

478145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95634.

The product of its digits is 4480, while the sum is 29.

The square root of 478145 is about 691.4802961763. The cubic root of 478145 is about 78.1963603986.

It can be divided in two parts, 47 and 8145, that added together give a 13-th power (8192 = 2¹³).

The spelling of 478145 in words is "four hundred seventy-eight thousand, one hundred forty-five".