11154161 has 2 divisors, whose sum is σ = 11154162. Its totient is φ = 11154160.

The previous prime is 11154139. The next prime is 11154163. The reversal of 11154161 is 16145111.

It is a happy number.

11154161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9985600 + 1168561 = 3160^2 + 1081^2 .

It is a cyclic number.

It is not a de Polignac number, because 11154161 - 2¹⁸ = 10892017 is a prime.

It is a super-2 number, since 2×11154161² = 248830615227842, which contains 22 as substring.

Together with 11154163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11154163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5577080 + 5577081.

It is an arithmetic number, because the mean of its divisors is an integer number (5577081).

Almost surely, 2^11154161 is an apocalyptic number.

It is an amenable number.

11154161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11154161 is an equidigital number, since it uses as much as digits as its factorization.

11154161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 20.

The square root of 11154161 is about 3339.7845738910. The cubic root of 11154161 is about 223.4321354377.

Adding to 11154161 its reverse (16145111), we get a palindrome (27299272).

The spelling of 11154161 in words is "eleven million, one hundred fifty-four thousand, one hundred sixty-one".