11557143 has 12 divisors (see below), whose sum is σ = 17977960. Its totient is φ = 7112016.

The previous prime is 11557129. The next prime is 11557151. The reversal of 11557143 is 34175511.

It is not a de Polignac number, because 11557143 - 2⁹ = 11556631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11557163) 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 11 ways as a sum of consecutive naturals, for example, 49273 + ... + 49506.

Almost surely, 2^11557143 is an apocalyptic number.

11557143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11557143 is a deficient number, since it is larger than the sum of its proper divisors (6420817).

11557143 is a wasteful number, since it uses less digits than its factorization.

11557143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98798 (or 98795 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 11557143 is about 3399.5798269786. The cubic root of 11557143 is about 226.0911150085.

The spelling of 11557143 in words is "eleven million, five hundred fifty-seven thousand, one hundred forty-three".