478851 has 4 divisors (see below), whose sum is σ = 638472. Its totient is φ = 319232.

The previous prime is 478843. The next prime is 478853. The reversal of 478851 is 158874.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 478851 - 2³ = 478843 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (478853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79806 + ... + 79811.

It is an arithmetic number, because the mean of its divisors is an integer number (159618).

2⁴⁷⁸⁸⁵¹ is an apocalyptic number.

478851 is a deficient number, since it is larger than the sum of its proper divisors (159621).

478851 is a wasteful number, since it uses less digits than its factorization.

478851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159620.

The product of its digits is 8960, while the sum is 33.

The square root of 478851 is about 691.9906068727. The cubic root of 478851 is about 78.2348281446.

The spelling of 478851 in words is "four hundred seventy-eight thousand, eight hundred fifty-one".