Search a number
-
+
8010181 is a prime number
BaseRepresentation
bin11110100011100111000101
3120001221220101
4132203213011
54022311211
6443404101
7125041204
oct36434705
916057811
108010181
114581193
122823631
131875c6a
1410c723b
15a835c1
hex7a39c5

8010181 has 2 divisors, whose sum is σ = 8010182. Its totient is φ = 8010180.

The previous prime is 8010173. The next prime is 8010199. The reversal of 8010181 is 1810108.

8010181 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4661281 + 3348900 = 2159^2 + 1830^2 .

It is a cyclic number.

It is not a de Polignac number, because 8010181 - 23 = 8010173 is a prime.

It is a super-2 number, since 2×80101812 = 128325999305522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8010131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4005090 + 4005091.

It is an arithmetic number, because the mean of its divisors is an integer number (4005091).

Almost surely, 28010181 is an apocalyptic number.

It is an amenable number.

8010181 is a deficient number, since it is larger than the sum of its proper divisors (1).

8010181 is an equidigital number, since it uses as much as digits as its factorization.

8010181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 19.

The square root of 8010181 is about 2830.2263160391. The cubic root of 8010181 is about 200.0848057015.

Adding to 8010181 its reverse (1810108), we get a palindrome (9820289).

The spelling of 8010181 in words is "eight million, ten thousand, one hundred eighty-one".