11561523 has 8 divisors (see below), whose sum is σ = 15483600. Its totient is φ = 7673568.

The previous prime is 11561509. The next prime is 11561531. The reversal of 11561523 is 32516511.

11561523 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11561523 - 2⁴ = 11561507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11561493 and 11561502.

It is not an unprimeable number, because it can be changed into a prime (11561423) 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 in 7 ways as a sum of consecutive naturals, for example, 7728 + ... + 9101.

It is an arithmetic number, because the mean of its divisors is an integer number (1935450).

Almost surely, 2^11561523 is an apocalyptic number.

11561523 is a deficient number, since it is larger than the sum of its proper divisors (3922077).

11561523 is a wasteful number, since it uses less digits than its factorization.

11561523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17061.

The product of its digits is 900, while the sum is 24.

The square root of 11561523 is about 3400.2239632118. The cubic root of 11561523 is about 226.1196732202.

The spelling of 11561523 in words is "eleven million, five hundred sixty-one thousand, five hundred twenty-three".