11275409 has 2 divisors, whose sum is σ = 11275410. Its totient is φ = 11275408.

The previous prime is 11275399. The next prime is 11275421. The reversal of 11275409 is 90457211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11022400 + 253009 = 3320^2 + 503^2 .

It is a cyclic number.

It is not a de Polignac number, because 11275409 - 2⁴ = 11275393 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11275469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5637704 + 5637705.

It is an arithmetic number, because the mean of its divisors is an integer number (5637705).

Almost surely, 2^11275409 is an apocalyptic number.

It is an amenable number.

11275409 is a deficient number, since it is larger than the sum of its proper divisors (1).

11275409 is an equidigital number, since it uses as much as digits as its factorization.

11275409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 11275409 is about 3357.8875800122. The cubic root of 11275409 is about 224.2388038375.

The spelling of 11275409 in words is "eleven million, two hundred seventy-five thousand, four hundred nine".