478251 has 8 divisors (see below), whose sum is σ = 708560. Its totient is φ = 318816.

The previous prime is 478243. The next prime is 478253. The reversal of 478251 is 152874.

It is not a de Polignac number, because 478251 - 2³ = 478243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 17713 = 478251 / (4 + 7 + 8 + 2 + 5 + 1).

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 478251.

It is not an unprimeable number, because it can be changed into a prime (478253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8830 + ... + 8883.

It is an arithmetic number, because the mean of its divisors is an integer number (88570).

2⁴⁷⁸²⁵¹ is an apocalyptic number.

478251 is a deficient number, since it is larger than the sum of its proper divisors (230309).

478251 is a wasteful number, since it uses less digits than its factorization.

478251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17722 (or 17716 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 478251 is about 691.5569390874. The cubic root of 478251 is about 78.2021384240.

It can be divided in two parts, 478 and 251, that added together give a 6-th power (729 = 3⁶).

The spelling of 478251 in words is "four hundred seventy-eight thousand, two hundred fifty-one".