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43221 = 314407
BaseRepresentation
bin1010100011010101
32012021210
422203111
52340341
6532033
7240003
oct124325
965253
1043221
112a522
1221019
1316899
1411a73
15cc16
hexa8d5

43221 has 4 divisors (see below), whose sum is σ = 57632. Its totient is φ = 28812.

The previous prime is 43207. The next prime is 43223. The reversal of 43221 is 12234.

43221 is digitally balanced in base 2, 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 not a de Polignac number, because 43221 - 25 = 43189 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 43197 and 43206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43223) 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, 7201 + ... + 7206.

It is an arithmetic number, because the mean of its divisors is an integer number (14408).

243221 is an apocalyptic number.

It is an amenable number.

43221 is a deficient number, since it is larger than the sum of its proper divisors (14411).

43221 is a wasteful number, since it uses less digits than its factorization.

43221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14410.

The product of its digits is 48, while the sum is 12.

The square root of 43221 is about 207.8966089190. The cubic root of 43221 is about 35.0938975276.

Adding to 43221 its reverse (12234), we get a palindrome (55455).

The spelling of 43221 in words is "forty-three thousand, two hundred twenty-one", and thus it is an iban number.

Divisors: 1 3 14407 43221