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5005281 = 31668427
BaseRepresentation
bin10011000101111111100001
3100102021221210
4103011333201
52240132111
6255140333
760354441
oct23057741
910367853
105005281
1129095a6
1218146a9
131063308
14944121
1568d0a6
hex4c5fe1

5005281 has 4 divisors (see below), whose sum is σ = 6673712. Its totient is φ = 3336852.

The previous prime is 5005261. The next prime is 5005289. The reversal of 5005281 is 1825005.

5005281 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2k-5005281 is a prime.

It is a super-2 number, since 2×50052812 = 50105675777922, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5005289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 834211 + ... + 834216.

It is an arithmetic number, because the mean of its divisors is an integer number (1668428).

Almost surely, 25005281 is an apocalyptic number.

It is an amenable number.

5005281 is a deficient number, since it is larger than the sum of its proper divisors (1668431).

5005281 is a wasteful number, since it uses less digits than its factorization.

5005281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668430.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 5005281 is about 2237.2485333552. The cubic root of 5005281 is about 171.0577760379.

The spelling of 5005281 in words is "five million, five thousand, two hundred eighty-one".

Divisors: 1 3 1668427 5005281