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43081 = 67643
BaseRepresentation
bin1010100001001001
32012002121
422201021
52334311
6531241
7236413
oct124111
965077
1043081
112a405
1220b21
13167bc
14119b3
15cb71
hexa849

43081 has 4 divisors (see below), whose sum is σ = 43792. Its totient is φ = 42372.

The previous prime is 43067. The next prime is 43093. The reversal of 43081 is 18034.

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 cyclic number.

It is not a de Polignac number, because 43081 - 25 = 43049 is a prime.

It is a super-2 number, since 2×430812 = 3711945122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (43051) 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, 255 + ... + 388.

It is an arithmetic number, because the mean of its divisors is an integer number (10948).

243081 is an apocalyptic number.

It is an amenable number.

43081 is a deficient number, since it is larger than the sum of its proper divisors (711).

43081 is an equidigital number, since it uses as much as digits as its factorization.

43081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 43081 is about 207.5596299862. The cubic root of 43081 is about 35.0559648864.

The spelling of 43081 in words is "forty-three thousand, eighty-one".

Divisors: 1 67 643 43081