11554009 has 2 divisors, whose sum is σ = 11554010. Its totient is φ = 11554008.

The previous prime is 11554007. The next prime is 11554019. The reversal of 11554009 is 90045511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11539609 + 14400 = 3397^2 + 120^2 .

It is a cyclic number.

It is not a de Polignac number, because 11554009 - 2¹ = 11554007 is a prime.

Together with 11554007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11554001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5777004 + 5777005.

It is an arithmetic number, because the mean of its divisors is an integer number (5777005).

Almost surely, 2^11554009 is an apocalyptic number.

It is an amenable number.

11554009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11554009 is an equidigital number, since it uses as much as digits as its factorization.

11554009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 11554009 is about 3399.1188564097. The cubic root of 11554009 is about 226.0706764620.

The spelling of 11554009 in words is "eleven million, five hundred fifty-four thousand, nine".