12355811 has 4 divisors (see below), whose sum is σ = 13306272. Its totient is φ = 11405352.

The previous prime is 12355799. The next prime is 12355813. The reversal of 12355811 is 11855321.

It is a happy number.

12355811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12355811 - 2⁶ = 12355747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12355813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475211 + ... + 475236.

It is an arithmetic number, because the mean of its divisors is an integer number (3326568).

Almost surely, 2^12355811 is an apocalyptic number.

12355811 is a deficient number, since it is larger than the sum of its proper divisors (950461).

12355811 is an equidigital number, since it uses as much as digits as its factorization.

12355811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950460.

The product of its digits is 1200, while the sum is 26.

The square root of 12355811 is about 3515.0833560529. The cubic root of 12355811 is about 231.1836336459.

The spelling of 12355811 in words is "twelve million, three hundred fifty-five thousand, eight hundred eleven".