11553709 has 2 divisors, whose sum is σ = 11553710. Its totient is φ = 11553708.

The previous prime is 11553679. The next prime is 11553719. The reversal of 11553709 is 90735511.

11553709 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., 5808100 + 5745609 = 2410^2 + 2397^2 .

It is a cyclic number.

It is not a de Polignac number, because 11553709 - 2¹⁵ = 11520941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11553719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5776854 + 5776855.

It is an arithmetic number, because the mean of its divisors is an integer number (5776855).

Almost surely, 2^11553709 is an apocalyptic number.

It is an amenable number.

11553709 is a deficient number, since it is larger than the sum of its proper divisors (1).

11553709 is an equidigital number, since it uses as much as digits as its factorization.

11553709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 11553709 is about 3399.0747270397. The cubic root of 11553709 is about 226.0687198024.

It can be divided in two parts, 115 and 53709, that added together give a square (53824 = 232²).

The spelling of 11553709 in words is "eleven million, five hundred fifty-three thousand, seven hundred nine".