9115261 has 2 divisors, whose sum is σ = 9115262. Its totient is φ = 9115260.

The previous prime is 9115259. The next prime is 9115273. The reversal of 9115261 is 1625119.

9115261 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., 9114361 + 900 = 3019^2 + 30^2 .

It is a cyclic number.

It is not a de Polignac number, because 9115261 - 2¹ = 9115259 is a prime.

Together with 9115259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9115201) 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, 4557630 + 4557631.

It is an arithmetic number, because the mean of its divisors is an integer number (4557631).

Almost surely, 2^9115261 is an apocalyptic number.

It is an amenable number.

9115261 is a deficient number, since it is larger than the sum of its proper divisors (1).

9115261 is an equidigital number, since it uses as much as digits as its factorization.

9115261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 25.

The square root of 9115261 is about 3019.1490522993. The cubic root of 9115261 is about 208.8925907351.

The spelling of 9115261 in words is "nine million, one hundred fifteen thousand, two hundred sixty-one".