478161 has 6 divisors (see below), whose sum is σ = 690690. Its totient is φ = 318768.

The previous prime is 478157. The next prime is 478169. The reversal of 478161 is 161874.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 463761 + 14400 = 681^2 + 120^2 .

It is not a de Polignac number, because 478161 - 2² = 478157 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (478169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26556 + ... + 26573.

It is an arithmetic number, because the mean of its divisors is an integer number (115115).

2⁴⁷⁸¹⁶¹ is an apocalyptic number.

It is an amenable number.

478161 is a deficient number, since it is larger than the sum of its proper divisors (212529).

478161 is a wasteful number, since it uses less digits than its factorization.

478161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53135 (or 53132 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 478161 is about 691.4918654619. The cubic root of 478161 is about 78.1972326081.

The spelling of 478161 in words is "four hundred seventy-eight thousand, one hundred sixty-one".