11201609 has 2 divisors, whose sum is σ = 11201610. Its totient is φ = 11201608.

The previous prime is 11201591. The next prime is 11201611. The reversal of 11201609 is 90610211.

11201609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11075584 + 126025 = 3328^2 + 355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11201609 is a prime.

Together with 11201611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11201669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600804 + 5600805.

It is an arithmetic number, because the mean of its divisors is an integer number (5600805).

Almost surely, 2^11201609 is an apocalyptic number.

It is an amenable number.

11201609 is a deficient number, since it is larger than the sum of its proper divisors (1).

11201609 is an equidigital number, since it uses as much as digits as its factorization.

11201609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 11201609 is about 3346.8804878573. The cubic root of 11201609 is about 223.7485020134.

The spelling of 11201609 in words is "eleven million, two hundred one thousand, six hundred nine".