Adding to 11157 its reverse (75111), we get a palindrome (86268).
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75111 = 3 ⋅25037.
It is a cyclic number.
It is a D-number.
11157 is a lucky number.
It is a plaindrome in base 10 and base 15.
It is a congruent number.
211157 is an apocalyptic number.
It is an amenable number.
11157 is an equidigital number, since it uses as much as digits as its factorization.
11157 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3722.
The square root of 11157 is about 105.6267011697. The cubic root of 11157 is about 22.3451090099.
The spelling of 11157 in words is "eleven thousand, one hundred fifty-seven".