11072161 has 4 divisors (see below), whose sum is σ = 11128000. Its totient is φ = 11016324.

The previous prime is 11072143. The next prime is 11072167. The reversal of 11072161 is 16127011.

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.

It is a cyclic number.

It is not a de Polignac number, because 11072161 - 2¹⁷ = 10941089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11072167) 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 in 3 ways as a sum of consecutive naturals, for example, 27621 + ... + 28018.

It is an arithmetic number, because the mean of its divisors is an integer number (2782000).

Almost surely, 2^11072161 is an apocalyptic number.

It is an amenable number.

11072161 is a deficient number, since it is larger than the sum of its proper divisors (55839).

11072161 is an equidigital number, since it uses as much as digits as its factorization.

11072161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55838.

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 11072161 is about 3327.4856874223. The cubic root of 11072161 is about 222.8832665402.

Adding to 11072161 its reverse (16127011), we get a palindrome (27199172).

The spelling of 11072161 in words is "eleven million, seventy-two thousand, one hundred sixty-one".