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44081 = 172593
BaseRepresentation
bin1010110000110001
32020110122
422300301
52402311
6540025
7242342
oct126061
966418
1044081
1130134
1221615
13170ab
14120c9
15d0db
hexac31

44081 has 4 divisors (see below), whose sum is σ = 46692. Its totient is φ = 41472.

The previous prime is 44071. The next prime is 44087. The reversal of 44081 is 18044.

It is a happy number.

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 30625 + 13456 = 175^2 + 116^2 .

It is a cyclic number.

It is not a de Polignac number, because 44081 - 26 = 44017 is a prime.

It is a super-2 number, since 2×440812 = 3886269122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 2593 = 44081 / (4 + 4 + 0 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1280 + ... + 1313.

It is an arithmetic number, because the mean of its divisors is an integer number (11673).

244081 is an apocalyptic number.

It is an amenable number.

44081 is a deficient number, since it is larger than the sum of its proper divisors (2611).

44081 is a wasteful number, since it uses less digits than its factorization.

44081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 44081 is about 209.9547570311. The cubic root of 44081 is about 35.3251335745.

The spelling of 44081 in words is "forty-four thousand, eighty-one".

Divisors: 1 17 2593 44081