11857133 has 4 divisors (see below), whose sum is σ = 11910528. Its totient is φ = 11803740.

The previous prime is 11857127. The next prime is 11857147. The reversal of 11857133 is 33175811.

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: 33175811 = 3623 ⋅9157.

It is a cyclic number.

It is not a de Polignac number, because 11857133 - 2⁸ = 11856877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11857096 and 11857105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11857123) 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, 26363 + ... + 26808.

It is an arithmetic number, because the mean of its divisors is an integer number (2977632).

Almost surely, 2^11857133 is an apocalyptic number.

It is an amenable number.

11857133 is a deficient number, since it is larger than the sum of its proper divisors (53395).

11857133 is an equidigital number, since it uses as much as digits as its factorization.

11857133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53394.

The product of its digits is 2520, while the sum is 29.

The square root of 11857133 is about 3443.4187953254. The cubic root of 11857133 is about 228.0306527476.

The spelling of 11857133 in words is "eleven million, eight hundred fifty-seven thousand, one hundred thirty-three".