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7268561 is a prime number
BaseRepresentation
bin11011101110100011010001
3111200021120222
4123232203101
53330043221
6415442425
7115532066
oct33564321
914607528
107268561
114114a83
122526415
131676531
14d72c6d
159889ab
hex6ee8d1

7268561 has 2 divisors, whose sum is σ = 7268562. Its totient is φ = 7268560.

The previous prime is 7268551. The next prime is 7268563. The reversal of 7268561 is 1658627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6838225 + 430336 = 2615^2 + 656^2 .

It is an emirp because it is prime and its reverse (1658627) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7268561 - 26 = 7268497 is a prime.

It is a Sophie Germain prime.

Together with 7268563, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7268563) 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, 3634280 + 3634281.

It is an arithmetic number, because the mean of its divisors is an integer number (3634281).

Almost surely, 27268561 is an apocalyptic number.

It is an amenable number.

7268561 is a deficient number, since it is larger than the sum of its proper divisors (1).

7268561 is an equidigital number, since it uses as much as digits as its factorization.

7268561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 35.

The square root of 7268561 is about 2696.0268915573. The cubic root of 7268561 is about 193.7088575839.

The spelling of 7268561 in words is "seven million, two hundred sixty-eight thousand, five hundred sixty-one".