11071571 has 4 divisors (see below), whose sum is σ = 12653232. Its totient is φ = 9489912.

The previous prime is 11071537. The next prime is 11071601. The reversal of 11071571 is 17517011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17517011 = 269 ⋅65119.

It is a cyclic number.

It is not a de Polignac number, because 11071571 - 2⁶ = 11071507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11071531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 790820 + ... + 790833.

It is an arithmetic number, because the mean of its divisors is an integer number (3163308).

Almost surely, 2^11071571 is an apocalyptic number.

11071571 is a deficient number, since it is larger than the sum of its proper divisors (1581661).

11071571 is an equidigital number, since it uses as much as digits as its factorization.

11071571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581660.

The product of its (nonzero) digits is 245, while the sum is 23.

The square root of 11071571 is about 3327.3970307133. The cubic root of 11071571 is about 222.8793075580.

Adding to 11071571 its reverse (17517011), we get a palindrome (28588582).

The spelling of 11071571 in words is "eleven million, seventy-one thousand, five hundred seventy-one".