11571043 has 4 divisors (see below), whose sum is σ = 12622968. Its totient is φ = 10519120.

The previous prime is 11571041. The next prime is 11571073. The reversal of 11571043 is 34017511.

11571043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11571043 - 2¹ = 11571041 is a prime.

It is a super-2 number, since 2×11571043² = 267778072215698, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11571041) 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, 525946 + ... + 525967.

It is an arithmetic number, because the mean of its divisors is an integer number (3155742).

Almost surely, 2^11571043 is an apocalyptic number.

11571043 is a deficient number, since it is larger than the sum of its proper divisors (1051925).

11571043 is a wasteful number, since it uses less digits than its factorization.

11571043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051924.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 11571043 is about 3401.6235829380. The cubic root of 11571043 is about 226.1817200835.

Adding to 11571043 its reverse (34017511), we get a palindrome (45588554).

The spelling of 11571043 in words is "eleven million, five hundred seventy-one thousand, forty-three".