11775217 has 4 divisors (see below), whose sum is σ = 11785716. Its totient is φ = 11764720.

The previous prime is 11775209. The next prime is 11775227. The reversal of 11775217 is 71257711.

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 9461776 + 2313441 = 3076^2 + 1521^2 .

It is a cyclic number.

It is not a de Polignac number, because 11775217 - 2³ = 11775209 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11775227) 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, 3334 + ... + 5887.

It is an arithmetic number, because the mean of its divisors is an integer number (2946429).

Almost surely, 2^11775217 is an apocalyptic number.

It is an amenable number.

11775217 is a deficient number, since it is larger than the sum of its proper divisors (10499).

11775217 is an equidigital number, since it uses as much as digits as its factorization.

11775217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10498.

The product of its digits is 3430, while the sum is 31.

The square root of 11775217 is about 3431.5036062927. The cubic root of 11775217 is about 227.5043158220.

The spelling of 11775217 in words is "eleven million, seven hundred seventy-five thousand, two hundred seventeen".