11157543 has 6 divisors (see below), whose sum is σ = 16116464. Its totient is φ = 7438356.

The previous prime is 11157527. The next prime is 11157557. The reversal of 11157543 is 34575111.

11157543 is a `hidden beast` number, since 1 + 115 + 7 + 543 = 666.

It is not a de Polignac number, because 11157543 - 2⁴ = 11157527 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 (11157563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 619855 + ... + 619872.

Almost surely, 2^11157543 is an apocalyptic number.

11157543 is a deficient number, since it is larger than the sum of its proper divisors (4958921).

11157543 is a wasteful number, since it uses less digits than its factorization.

11157543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239733 (or 1239730 counting only the distinct ones).

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

The square root of 11157543 is about 3340.2908555993. The cubic root of 11157543 is about 223.4547150868.

The spelling of 11157543 in words is "eleven million, one hundred fifty-seven thousand, five hundred forty-three".