11557271 has 8 divisors (see below), whose sum is σ = 12656784. Its totient is φ = 10465920.

The previous prime is 11557267. The next prime is 11557279. The reversal of 11557271 is 17275511.

11557271 is digitally balanced in base 2 and base 3, because in such bases 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 a cyclic number.

It is not a de Polignac number, because 11557271 - 2² = 11557267 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 (11557279) 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, 1151 + ... + 4943.

It is an arithmetic number, because the mean of its divisors is an integer number (1582098).

Almost surely, 2^11557271 is an apocalyptic number.

11557271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11557271 is a deficient number, since it is larger than the sum of its proper divisors (1099513).

11557271 is a wasteful number, since it uses less digits than its factorization.

11557271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4081.

The product of its digits is 2450, while the sum is 29.

The square root of 11557271 is about 3399.5986527824. The cubic root of 11557271 is about 226.0919496887.

The spelling of 11557271 in words is "eleven million, five hundred fifty-seven thousand, two hundred seventy-one".