11541571 has 4 divisors (see below), whose sum is σ = 11570200. Its totient is φ = 11512944.

The previous prime is 11541553. The next prime is 11541583. The reversal of 11541571 is 17514511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11541571 - 2¹⁵ = 11508803 is a prime.

It is a super-2 number, since 2×11541571² = 266415722296082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11541511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13701 + ... + 14518.

It is an arithmetic number, because the mean of its divisors is an integer number (2892550).

Almost surely, 2^11541571 is an apocalyptic number.

11541571 is a deficient number, since it is larger than the sum of its proper divisors (28629).

11541571 is an equidigital number, since it uses as much as digits as its factorization.

11541571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28628.

The product of its digits is 700, while the sum is 25.

The square root of 11541571 is about 3397.2887719474. The cubic root of 11541571 is about 225.9895249276.

The spelling of 11541571 in words is "eleven million, five hundred forty-one thousand, five hundred seventy-one".