Search a number
-
+
8124481 is a prime number
BaseRepresentation
bin11110111111100001000001
3120021202200201
4132333201001
54034440411
6450045201
7126025351
oct36774101
916252621
108124481
11464a052
122879801
1318b5cb1
141116b61
15aa73c1
hex7bf841

8124481 has 2 divisors, whose sum is σ = 8124482. Its totient is φ = 8124480.

The previous prime is 8124469. The next prime is 8124491. The reversal of 8124481 is 1844218.

8124481 = 20152 + 20162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4064256 + 4060225 = 2016^2 + 2015^2 .

It is a cyclic number.

It is not a de Polignac number, because 8124481 - 219 = 7600193 is a prime.

It is a super-2 number, since 2×81244812 = 132014383038722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8124401) 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, 4062240 + 4062241.

It is an arithmetic number, because the mean of its divisors is an integer number (4062241).

Almost surely, 28124481 is an apocalyptic number.

8124481 is the 2016-th centered square number.

It is an amenable number.

8124481 is a deficient number, since it is larger than the sum of its proper divisors (1).

8124481 is an equidigital number, since it uses as much as digits as its factorization.

8124481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2048, while the sum is 28.

The square root of 8124481 is about 2850.3475226716. The cubic root of 8124481 is about 201.0320073118.

Adding to 8124481 its reverse (1844218), we get a palindrome (9968699).

The spelling of 8124481 in words is "eight million, one hundred twenty-four thousand, four hundred eighty-one".