11543601 has 4 divisors (see below), whose sum is σ = 15391472. Its totient is φ = 7695732.

The previous prime is 11543551. The next prime is 11543603. The reversal of 11543601 is 10634511.

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: 10634511 = 3 ⋅3544837.

It is not a de Polignac number, because 11543601 - 2¹⁰ = 11542577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11543603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1923931 + ... + 1923936.

It is an arithmetic number, because the mean of its divisors is an integer number (3847868).

Almost surely, 2^11543601 is an apocalyptic number.

It is an amenable number.

11543601 is a deficient number, since it is larger than the sum of its proper divisors (3847871).

11543601 is an equidigital number, since it uses as much as digits as its factorization.

11543601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3847870.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 11543601 is about 3397.5875264664. The cubic root of 11543601 is about 226.0027736105.

The spelling of 11543601 in words is "eleven million, five hundred forty-three thousand, six hundred one".