478557 has 6 divisors (see below), whose sum is σ = 691262. Its totient is φ = 319032.

The previous prime is 478531. The next prime is 478571. The reversal of 478557 is 755874.

It can be written as a sum of positive squares in only one way, i.e., 423801 + 54756 = 651^2 + 234^2 .

It is not a de Polignac number, because 478557 - 2⁶ = 478493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26578 + ... + 26595.

2⁴⁷⁸⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

478557 is a deficient number, since it is larger than the sum of its proper divisors (212705).

478557 is a wasteful number, since it uses less digits than its factorization.

478557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53179 (or 53176 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The square root of 478557 is about 691.7781436270. The cubic root of 478557 is about 78.2188135956.

It can be divided in two parts, 478 and 557, that added together give a triangular number (1035 = T₄₅).

The spelling of 478557 in words is "four hundred seventy-eight thousand, five hundred fifty-seven".