11855271 has 8 divisors (see below), whose sum is σ = 15823744. Its totient is φ = 7895160.

The previous prime is 11855269. The next prime is 11855303. The reversal of 11855271 is 17255811.

11855271 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 11855271 - 2¹ = 11855269 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 (11855231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2976 + ... + 5706.

It is an arithmetic number, because the mean of its divisors is an integer number (1977968).

Almost surely, 2^11855271 is an apocalyptic number.

11855271 is a deficient number, since it is larger than the sum of its proper divisors (3968473).

11855271 is a wasteful number, since it uses less digits than its factorization.

11855271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181.

The product of its digits is 2800, while the sum is 30.

The square root of 11855271 is about 3443.1484138794. The cubic root of 11855271 is about 228.0187157613.

The spelling of 11855271 in words is "eleven million, eight hundred fifty-five thousand, two hundred seventy-one".