23154161 has 2 divisors, whose sum is σ = 23154162. Its totient is φ = 23154160.

The previous prime is 23154143. The next prime is 23154181. The reversal of 23154161 is 16145132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17181025 + 5973136 = 4145^2 + 2444^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23154161 is a prime.

It is a super-2 number, since 2×23154161² = 1072230343227842, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23154121) 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 as a sum of consecutive naturals, namely, 11577080 + 11577081.

It is an arithmetic number, because the mean of its divisors is an integer number (11577081).

Almost surely, 2^23154161 is an apocalyptic number.

It is an amenable number.

23154161 is a deficient number, since it is larger than the sum of its proper divisors (1).

23154161 is an equidigital number, since it uses as much as digits as its factorization.

23154161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 23.

The square root of 23154161 is about 4811.8770765679. The cubic root of 23154161 is about 285.0206653734.

Adding to 23154161 its reverse (16145132), we get a palindrome (39299293).

The spelling of 23154161 in words is "twenty-three million, one hundred fifty-four thousand, one hundred sixty-one".