11689553 has 2 divisors, whose sum is σ = 11689554. Its totient is φ = 11689552.

The previous prime is 11689549. The next prime is 11689571. The reversal of 11689553 is 35598611.

11689553 is digitally balanced in base 2, 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., 7879249 + 3810304 = 2807^2 + 1952^2 .

It is an emirp because it is prime and its reverse (35598611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11689553 - 2² = 11689549 is a prime.

It is a Chen prime.

It is equal to p₇₆₈₉₈₀ and since 11689553 and 768980 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (11689583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5844776 + 5844777.

It is an arithmetic number, because the mean of its divisors is an integer number (5844777).

Almost surely, 2^11689553 is an apocalyptic number.

It is an amenable number.

11689553 is a deficient number, since it is larger than the sum of its proper divisors (1).

11689553 is an equidigital number, since it uses as much as digits as its factorization.

11689553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 38.

The square root of 11689553 is about 3418.9988300671. The cubic root of 11689553 is about 226.9512791089.

The spelling of 11689553 in words is "eleven million, six hundred eighty-nine thousand, five hundred fifty-three".