12355523 has 4 divisors (see below), whose sum is σ = 12372360. Its totient is φ = 12338688.

The previous prime is 12355513. The next prime is 12355543. The reversal of 12355523 is 32555321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12355523 - 2⁴ = 12355507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12355492 and 12355501.

It is not an unprimeable number, because it can be changed into a prime (12355513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7265 + ... + 8802.

It is an arithmetic number, because the mean of its divisors is an integer number (3093090).

Almost surely, 2^12355523 is an apocalyptic number.

12355523 is a deficient number, since it is larger than the sum of its proper divisors (16837).

12355523 is an equidigital number, since it uses as much as digits as its factorization.

12355523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16836.

The product of its digits is 4500, while the sum is 26.

The square root of 12355523 is about 3515.0423895026. The cubic root of 12355523 is about 231.1818374221.

The spelling of 12355523 in words is "twelve million, three hundred fifty-five thousand, five hundred twenty-three".