13855133 has 4 divisors (see below), whose sum is σ = 13862940. Its totient is φ = 13847328.

The previous prime is 13855129. The next prime is 13855139. The reversal of 13855133 is 33155831.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 33155831 = 17 ⋅1950343.

It can be written as a sum of positive squares in 2 ways, for example, as 13410244 + 444889 = 3662^2 + 667^2 .

It is a cyclic number.

It is not a de Polignac number, because 13855133 - 2² = 13855129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13855096 and 13855105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13855139) 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, 191 + ... + 5267.

It is an arithmetic number, because the mean of its divisors is an integer number (3465735).

Almost surely, 2^13855133 is an apocalyptic number.

It is an amenable number.

13855133 is a deficient number, since it is larger than the sum of its proper divisors (7807).

13855133 is an equidigital number, since it uses as much as digits as its factorization.

13855133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7806.

The product of its digits is 5400, while the sum is 29.

The square root of 13855133 is about 3722.2483796759. The cubic root of 13855133 is about 240.1800327412.

The spelling of 13855133 in words is "thirteen million, eight hundred fifty-five thousand, one hundred thirty-three".