Search a number
-
+
4433221 = 13341017
BaseRepresentation
bin10000111010010101000101
322100020020101
4100322111011
52113330341
6235004101
752452562
oct20722505
98306211
104433221
112558821
121599631
13bc2b10
14835869
155c8831
hex43a545

4433221 has 4 divisors (see below), whose sum is σ = 4774252. Its totient is φ = 4092192.

The previous prime is 4433203. The next prime is 4433237. The reversal of 4433221 is 1223344.

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 2512225 + 1920996 = 1585^2 + 1386^2 .

It is a de Polignac number, because none of the positive numbers 2k-4433221 is a prime.

It is a Duffinian number.

4433221 is a lucky number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4433281) 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, 170496 + ... + 170521.

It is an arithmetic number, because the mean of its divisors is an integer number (1193563).

Almost surely, 24433221 is an apocalyptic number.

It is an amenable number.

4433221 is a deficient number, since it is larger than the sum of its proper divisors (341031).

4433221 is a wasteful number, since it uses less digits than its factorization.

4433221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341030.

The product of its digits is 576, while the sum is 19.

The square root of 4433221 is about 2105.5215505903. The cubic root of 4433221 is about 164.2756246572.

Adding to 4433221 its reverse (1223344), we get a palindrome (5656565).

The spelling of 4433221 in words is "four million, four hundred thirty-three thousand, two hundred twenty-one".

Divisors: 1 13 341017 4433221