1130561 has 2 divisors, whose sum is σ = 1130562. Its totient is φ = 1130560.
The previous prime is 1130527. The next prime is 1130579. The reversal of 1130561 is 1650311.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 1062961 + 67600 = 1031^2 + 260^2 .
It is a cyclic number.
It is not a de Polignac number, because 1130561 - 26 = 1130497 is a prime.
It is not a weakly prime, because it can be changed into another prime (1130501) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565280 + 565281.
It is an arithmetic number, because the mean of its divisors is an integer number (565281).
21130561 is an apocalyptic number.
It is an amenable number.
1130561 is a deficient number, since it is larger than the sum of its proper divisors (1).
1130561 is an equidigital number, since it uses as much as digits as its factorization.
1130561 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 90, while the sum is 17.
The square root of 1130561 is about 1063.2784207347. The cubic root of 1130561 is about 104.1752776526.
Adding to 1130561 its reverse (1650311), we get a palindrome (2780872).
The spelling of 1130561 in words is "one million, one hundred thirty thousand, five hundred sixty-one".
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