Search a number
-
+
5543221 is a prime number
BaseRepresentation
bin10101001001010100110101
3101102121212111
4111021110311
52404340341
6314451021
765054665
oct25112465
911377774
105543221
113146782
121a33a71
1311c1118
14a441a5
15747681
hex549535

5543221 has 2 divisors, whose sum is σ = 5543222. Its totient is φ = 5543220.

The previous prime is 5543201. The next prime is 5543243. The reversal of 5543221 is 1223455.

It is an a-pointer prime, because the next prime (5543243) can be obtained adding 5543221 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5340721 + 202500 = 2311^2 + 450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-5543221 is a prime.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 5543192 and 5543201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5543201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2771610 + 2771611.

It is an arithmetic number, because the mean of its divisors is an integer number (2771611).

Almost surely, 25543221 is an apocalyptic number.

It is an amenable number.

5543221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5543221 is an equidigital number, since it uses as much as digits as its factorization.

5543221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 22.

The square root of 5543221 is about 2354.4045956462. The cubic root of 5543221 is about 176.9785901945.

Adding to 5543221 its reverse (1223455), we get a palindrome (6766676).

The spelling of 5543221 in words is "five million, five hundred forty-three thousand, two hundred twenty-one".