13811601 has 4 divisors (see below), whose sum is σ = 18415472. Its totient is φ = 9207732.

The previous prime is 13811593. The next prime is 13811617. The reversal of 13811601 is 10611831.

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: 10611831 = 3 ⋅3537277.

It is not a de Polignac number, because 13811601 - 2³ = 13811593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13811621) 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, 2301931 + ... + 2301936.

It is an arithmetic number, because the mean of its divisors is an integer number (4603868).

Almost surely, 2^13811601 is an apocalyptic number.

It is an amenable number.

13811601 is a deficient number, since it is larger than the sum of its proper divisors (4603871).

13811601 is an equidigital number, since it uses as much as digits as its factorization.

13811601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4603870.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 13811601 is about 3716.3962382932. The cubic root of 13811601 is about 239.9282250647.

The spelling of 13811601 in words is "thirteen million, eight hundred eleven thousand, six hundred one".