11523601 has 4 divisors (see below), whose sum is σ = 11768832. Its totient is φ = 11278372.

The previous prime is 11523593. The next prime is 11523641. The reversal of 11523601 is 10632511.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10632511 = 157 ⋅67723.

It is a cyclic number.

It is not a de Polignac number, because 11523601 - 2³ = 11523593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11523641) 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 in 3 ways as a sum of consecutive naturals, for example, 122545 + ... + 122638.

It is an arithmetic number, because the mean of its divisors is an integer number (2942208).

Almost surely, 2^11523601 is an apocalyptic number.

It is an amenable number.

11523601 is a deficient number, since it is larger than the sum of its proper divisors (245231).

11523601 is an equidigital number, since it uses as much as digits as its factorization.

11523601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245230.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 11523601 is about 3394.6429856466. The cubic root of 11523601 is about 225.8721769156.

It can be divided in two parts, 1152 and 3601, that added together give a triangular number (4753 = T₉₇).

The spelling of 11523601 in words is "eleven million, five hundred twenty-three thousand, six hundred one".