Base | Representation |
---|---|
bin | 11111010101000101000001 |
3 | 120110020211211 |
4 | 133111011001 |
5 | 4100302201 |
6 | 452010121 |
7 | 126544012 |
oct | 37250501 |
9 | 16406754 |
10 | 8212801 |
11 | 46aa443 |
12 | 2900941 |
13 | 191725c |
14 | 113b009 |
15 | ac3651 |
hex | 7d5141 |
8212801 has 2 divisors, whose sum is σ = 8212802. Its totient is φ = 8212800.
The previous prime is 8212759. The next prime is 8212811. The reversal of 8212801 is 1082128.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 6250000 + 1962801 = 2500^2 + 1401^2 .
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-8212801 is a prime.
It is not a weakly prime, because it can be changed into another prime (8212811) 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, 4106400 + 4106401.
It is an arithmetic number, because the mean of its divisors is an integer number (4106401).
Almost surely, 28212801 is an apocalyptic number.
It is an amenable number.
8212801 is a deficient number, since it is larger than the sum of its proper divisors (1).
8212801 is an equidigital number, since it uses as much as digits as its factorization.
8212801 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 256, while the sum is 22.
The square root of 8212801 is about 2865.7984925671. The cubic root of 8212801 is about 201.7578462840.
Adding to 8212801 its reverse (1082128), we get a palindrome (9294929).
The spelling of 8212801 in words is "eight million, two hundred twelve thousand, eight hundred one".
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