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5278481 = 13406037
BaseRepresentation
bin10100001000101100010001
3100221011201022
4110020230101
52322402411
6305045225
762603105
oct24105421
910834638
105278481
112a8588a
121926815
13112a780
149b5905
156e3edb
hex508b11

5278481 has 4 divisors (see below), whose sum is σ = 5684532. Its totient is φ = 4872432.

The previous prime is 5278459. The next prime is 5278499. The reversal of 5278481 is 1848725.

5278481 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2689600 + 2588881 = 1640^2 + 1609^2 .

It is a cyclic number.

It is not a de Polignac number, because 5278481 - 214 = 5262097 is a prime.

It is a super-2 number, since 2×52784812 = 55724723334722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5278421) 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, 203006 + ... + 203031.

It is an arithmetic number, because the mean of its divisors is an integer number (1421133).

Almost surely, 25278481 is an apocalyptic number.

It is an amenable number.

5278481 is a deficient number, since it is larger than the sum of its proper divisors (406051).

5278481 is a wasteful number, since it uses less digits than its factorization.

5278481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406050.

The product of its digits is 17920, while the sum is 35.

The square root of 5278481 is about 2297.4945048901. The cubic root of 5278481 is about 174.1150536023.

The spelling of 5278481 in words is "five million, two hundred seventy-eight thousand, four hundred eighty-one".

Divisors: 1 13 406037 5278481