11557085 has 4 divisors (see below), whose sum is σ = 13868508. Its totient is φ = 9245664.

The previous prime is 11557081. The next prime is 11557099. The reversal of 11557085 is 58075511.

It is a happy number.

11557085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58075511 = 13 ⋅4467347.

It can be written as a sum of positive squares in 2 ways, for example, as 1552516 + 10004569 = 1246^2 + 3163^2 .

It is a cyclic number.

It is not a de Polignac number, because 11557085 - 2² = 11557081 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 (11557081) 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, 1155704 + ... + 1155713.

It is an arithmetic number, because the mean of its divisors is an integer number (3467127).

Almost surely, 2^11557085 is an apocalyptic number.

It is an amenable number.

11557085 is a deficient number, since it is larger than the sum of its proper divisors (2311423).

11557085 is an equidigital number, since it uses as much as digits as its factorization.

11557085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311422.

The product of its (nonzero) digits is 7000, while the sum is 32.

The square root of 11557085 is about 3399.5712965020. The cubic root of 11557085 is about 226.0907367920.

The spelling of 11557085 in words is "eleven million, five hundred fifty-seven thousand, eighty-five".