9509161 has 2 divisors, whose sum is σ = 9509162. Its totient is φ = 9509160.

The previous prime is 9509131. The next prime is 9509167. The reversal of 9509161 is 1619059.

9509161 = 2180² + 2181².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4756761 + 4752400 = 2181^2 + 2180^2 .

It is a cyclic number.

It is not a de Polignac number, because 9509161 - 2⁹ = 9508649 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9509167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4754580 + 4754581.

It is an arithmetic number, because the mean of its divisors is an integer number (4754581).

Almost surely, 2^9509161 is an apocalyptic number.

9509161 is the 2181-st centered square number.

It is an amenable number.

9509161 is a deficient number, since it is larger than the sum of its proper divisors (1).

9509161 is an equidigital number, since it uses as much as digits as its factorization.

9509161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 9509161 is about 3083.6927538262. The cubic root of 9509161 is about 211.8592352010.

The spelling of 9509161 in words is "nine million, five hundred nine thousand, one hundred sixty-one".