13881601 has 4 divisors (see below), whose sum is σ = 14143572. Its totient is φ = 13619632.

The previous prime is 13881589. The next prime is 13881611. The reversal of 13881601 is 10618831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10618831 = 71 ⋅149561.

It can be written as a sum of positive squares in 2 ways, for example, as 6864400 + 7017201 = 2620^2 + 2649^2 .

It is a cyclic number.

It is not a de Polignac number, because 13881601 - 2⁷ = 13881473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13881601.

It is not an unprimeable number, because it can be changed into a prime (13881611) 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, 130906 + ... + 131011.

It is an arithmetic number, because the mean of its divisors is an integer number (3535893).

Almost surely, 2^13881601 is an apocalyptic number.

It is an amenable number.

13881601 is a deficient number, since it is larger than the sum of its proper divisors (261971).

13881601 is an equidigital number, since it uses as much as digits as its factorization.

13881601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261970.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 13881601 is about 3725.8020613017. The cubic root of 13881601 is about 240.3328772101.

The spelling of 13881601 in words is "thirteen million, eight hundred eighty-one thousand, six hundred one".