11641271 has 4 divisors (see below), whose sum is σ = 11648832. Its totient is φ = 11633712.

The previous prime is 11641249. The next prime is 11641313. The reversal of 11641271 is 17214611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 17214611 = 2113 ⋅8147.

It is a cyclic number.

It is not a de Polignac number, because 11641271 - 2¹⁴ = 11624887 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 (11641211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551 + ... + 4856.

It is an arithmetic number, because the mean of its divisors is an integer number (2912208).

Almost surely, 2^11641271 is an apocalyptic number.

11641271 is a deficient number, since it is larger than the sum of its proper divisors (7561).

11641271 is an equidigital number, since it uses as much as digits as its factorization.

11641271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7560.

The product of its digits is 336, while the sum is 23.

The square root of 11641271 is about 3411.9306851107. The cubic root of 11641271 is about 226.6383848316.

Adding to 11641271 its reverse (17214611), we get a palindrome (28855882).

The spelling of 11641271 in words is "eleven million, six hundred forty-one thousand, two hundred seventy-one".