13655601 has 8 divisors (see below), whose sum is σ = 20230560. Its totient is φ = 9103716.

The previous prime is 13655591. The next prime is 13655611. The reversal of 13655601 is 10655631.

It is a happy number.

13655601 is a `hidden beast` number, since 1 + 3 + 6 + 55 + 601 = 666.

It is an interprime number because it is at equal distance from previous prime (13655591) and next prime (13655611).

It is not a de Polignac number, because 13655601 - 2⁵ = 13655569 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 505763 = 13655601 / (1 + 3 + 6 + 5 + 5 + 6 + 0 + 1).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13655611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252855 + ... + 252908.

It is an arithmetic number, because the mean of its divisors is an integer number (2528820).

Almost surely, 2^13655601 is an apocalyptic number.

It is an amenable number.

13655601 is a deficient number, since it is larger than the sum of its proper divisors (6574959).

13655601 is an equidigital number, since it uses as much as digits as its factorization.

13655601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505772 (or 505766 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 13655601 is about 3695.3485627204. The cubic root of 13655601 is about 239.0214846205.

The spelling of 13655601 in words is "thirteen million, six hundred fifty-five thousand, six hundred one".