11523161 has 16 divisors (see below), whose sum is σ = 13716864. Its totient is φ = 9571584.

The previous prime is 11523157. The next prime is 11523163. The reversal of 11523161 is 16132511.

It is a cyclic number.

It is not a de Polignac number, because 11523161 - 2² = 11523157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11523163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3950 + ... + 6216.

It is an arithmetic number, because the mean of its divisors is an integer number (857304).

Almost surely, 2^11523161 is an apocalyptic number.

It is an amenable number.

11523161 is a deficient number, since it is larger than the sum of its proper divisors (2193703).

11523161 is a wasteful number, since it uses less digits than its factorization.

11523161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320.

The product of its digits is 180, while the sum is 20.

The square root of 11523161 is about 3394.5781770347. The cubic root of 11523161 is about 225.8693020902.

Adding to 11523161 its reverse (16132511), we get a palindrome (27655672).

The spelling of 11523161 in words is "eleven million, five hundred twenty-three thousand, one hundred sixty-one".