2478855 has 16 divisors (see below), whose sum is σ = 4199904. Its totient is φ = 1244160.

The previous prime is 2478809. The next prime is 2478877. The reversal of 2478855 is 5588742.

2478855 = 127² + 128² + ... + 211².

2478855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2478855 - 2⁷ = 2478727 is a prime.

It is a super-2 number, since 2×2478855² = 12289444222050, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁸ + 4⁴ + 7² + 8³ + 8⁶ + 5⁴ + 5⁹ .

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4606 + ... + 5115.

It is an arithmetic number, because the mean of its divisors is an integer number (262494).

2^2478855 is an apocalyptic number.

2478855 is a deficient number, since it is larger than the sum of its proper divisors (1721049).

2478855 is a wasteful number, since it uses less digits than its factorization.

2478855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9746.

The product of its digits is 89600, while the sum is 39.

The square root of 2478855 is about 1574.4379949684. The cubic root of 2478855 is about 135.3371545320.

It can be divided in two parts, 2478 and 855, that added together give a palindrome (3333).

The spelling of 2478855 in words is "two million, four hundred seventy-eight thousand, eight hundred fifty-five".