11575117 has 4 divisors (see below), whose sum is σ = 11887996. Its totient is φ = 11262240.

The previous prime is 11575103. The next prime is 11575133. The reversal of 11575117 is 71157511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3924361 + 7650756 = 1981^2 + 2766^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11575117 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 (11575217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156384 + ... + 156457.

It is an arithmetic number, because the mean of its divisors is an integer number (2971999).

Almost surely, 2^11575117 is an apocalyptic number.

It is an amenable number.

11575117 is a deficient number, since it is larger than the sum of its proper divisors (312879).

11575117 is an equidigital number, since it uses as much as digits as its factorization.

11575117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312878.

The product of its digits is 1225, while the sum is 28.

The square root of 11575117 is about 3402.2223619276. Note that the first 3 decimals coincide. The cubic root of 11575117 is about 226.2082620931.

It can be divided in two parts, 11 and 575117, that added together give a triangular number (575128 = T₁₀₇₂).

The spelling of 11575117 in words is "eleven million, five hundred seventy-five thousand, one hundred seventeen".