11523641 has 2 divisors, whose sum is σ = 11523642. Its totient is φ = 11523640.

The previous prime is 11523593. The next prime is 11523653. The reversal of 11523641 is 14632511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11363641 + 160000 = 3371^2 + 400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11523641 is a prime.

It is not a weakly prime, because it can be changed into another prime (11523241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5761820 + 5761821.

It is an arithmetic number, because the mean of its divisors is an integer number (5761821).

Almost surely, 2^11523641 is an apocalyptic number.

It is an amenable number.

11523641 is a deficient number, since it is larger than the sum of its proper divisors (1).

11523641 is an equidigital number, since it uses as much as digits as its factorization.

11523641 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 11523641 is about 3394.6488772773. The cubic root of 11523641 is about 225.8724382597.

The spelling of 11523641 in words is "eleven million, five hundred twenty-three thousand, six hundred forty-one".