11822855 has 16 divisors (see below), whose sum is σ = 15634944. Its totient is φ = 8510880.

The previous prime is 11822821. The next prime is 11822857. The reversal of 11822855 is 55822811.

It is a happy number.

11822855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-11822855 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11822857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4622 + ... + 6708.

It is an arithmetic number, because the mean of its divisors is an integer number (977184).

Almost surely, 2^11822855 is an apocalyptic number.

11822855 is a deficient number, since it is larger than the sum of its proper divisors (3812089).

11822855 is a wasteful number, since it uses less digits than its factorization.

11822855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206.

The product of its digits is 6400, while the sum is 32.

The square root of 11822855 is about 3438.4378720576. The cubic root of 11822855 is about 227.8107013462.

The spelling of 11822855 in words is "eleven million, eight hundred twenty-two thousand, eight hundred fifty-five".