13553855 has 8 divisors (see below), whose sum is σ = 18588192. Its totient is φ = 9294048.

The previous prime is 13553833. The next prime is 13553857. The reversal of 13553855 is 55835531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13553855 is a prime.

It is a super-2 number, since 2×13553855² = 367413970722050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 387253 = 13553855 / (1 + 3 + 5 + 5 + 3 + 8 + 5 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13553857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193592 + ... + 193661.

It is an arithmetic number, because the mean of its divisors is an integer number (2323524).

Almost surely, 2^13553855 is an apocalyptic number.

13553855 is a deficient number, since it is larger than the sum of its proper divisors (5034337).

13553855 is an equidigital number, since it uses as much as digits as its factorization.

13553855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387265.

The product of its digits is 45000, while the sum is 35.

The square root of 13553855 is about 3681.5560568868. The cubic root of 13553855 is about 238.4263654064.

The spelling of 13553855 in words is "thirteen million, five hundred fifty-three thousand, eight hundred fifty-five".