11985055 has 4 divisors (see below), whose sum is σ = 14382072. Its totient is φ = 9588040.

The previous prime is 11985041. The next prime is 11985073. The reversal of 11985055 is 55058911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55058911 = 113 ⋅487247.

It is not a de Polignac number, because 11985055 - 2⁹ = 11984543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11985055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1198501 + ... + 1198510.

It is an arithmetic number, because the mean of its divisors is an integer number (3595518).

Almost surely, 2^11985055 is an apocalyptic number.

11985055 is a deficient number, since it is larger than the sum of its proper divisors (2397017).

11985055 is an equidigital number, since it uses as much as digits as its factorization.

11985055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397016.

The product of its (nonzero) digits is 9000, while the sum is 34.

The square root of 11985055 is about 3461.9438181461. The cubic root of 11985055 is about 228.8477659475.

The spelling of 11985055 in words is "eleven million, nine hundred eighty-five thousand, fifty-five".