11572166 has 4 divisors (see below), whose sum is σ = 17358252. Its totient is φ = 5786082.

The previous prime is 11572163. The next prime is 11572181. The reversal of 11572166 is 66127511.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11572163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2893040 + ... + 2893043.

It is an arithmetic number, because the mean of its divisors is an integer number (4339563).

Almost surely, 2^11572166 is an apocalyptic number.

11572166 is a deficient number, since it is larger than the sum of its proper divisors (5786086).

11572166 is an equidigital number, since it uses as much as digits as its factorization.

11572166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5786085.

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

The square root of 11572166 is about 3401.7886471678. The cubic root of 11572166 is about 226.1890370227.

Adding to 11572166 its reverse (66127511), we get a palindrome (77699677).

The spelling of 11572166 in words is "eleven million, five hundred seventy-two thousand, one hundred sixty-six".