11132857 has 4 divisors (see below), whose sum is σ = 11139556. Its totient is φ = 11126160.

The previous prime is 11132837. The next prime is 11132861. The reversal of 11132857 is 75823111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5271616 + 5861241 = 2296^2 + 2421^2 .

It is a cyclic number.

It is not a de Polignac number, because 11132857 - 2¹⁹ = 10608569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11132827) 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, 1243 + ... + 4879.

It is an arithmetic number, because the mean of its divisors is an integer number (2784889).

Almost surely, 2^11132857 is an apocalyptic number.

It is an amenable number.

11132857 is a deficient number, since it is larger than the sum of its proper divisors (6699).

11132857 is an equidigital number, since it uses as much as digits as its factorization.

11132857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6698.

The product of its digits is 1680, while the sum is 28.

The square root of 11132857 is about 3336.5936222441. The cubic root of 11132857 is about 223.2897959735.

Adding to 11132857 its reverse (75823111), we get a palindrome (86955968).

The spelling of 11132857 in words is "eleven million, one hundred thirty-two thousand, eight hundred fifty-seven".