13555901 has 4 divisors (see below), whose sum is σ = 14145312. Its totient is φ = 12966492.

The previous prime is 13555877. The next prime is 13555921. The reversal of 13555901 is 10955531.

It is a happy number.

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: 10955531 = 17 ⋅644443.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13555901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13555921) 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, 294671 + ... + 294716.

It is an arithmetic number, because the mean of its divisors is an integer number (3536328).

Almost surely, 2^13555901 is an apocalyptic number.

It is an amenable number.

13555901 is a deficient number, since it is larger than the sum of its proper divisors (589411).

13555901 is an equidigital number, since it uses as much as digits as its factorization.

13555901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589410.

The product of its (nonzero) digits is 3375, while the sum is 29.

The square root of 13555901 is about 3681.8339180360. The cubic root of 13555901 is about 238.4383618901.

The spelling of 13555901 in words is "thirteen million, five hundred fifty-five thousand, nine hundred one".