13255881 has 4 divisors (see below), whose sum is σ = 17674512. Its totient is φ = 8837252.

The previous prime is 13255873. The next prime is 13255951. The reversal of 13255881 is 18855231.

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: 18855231 = 3 ⋅6285077.

It is a cyclic number.

It is not a de Polignac number, because 13255881 - 2³ = 13255873 is a prime.

It is a super-2 number, since 2×13255881² = 351436762172322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13255831) 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, 2209311 + ... + 2209316.

It is an arithmetic number, because the mean of its divisors is an integer number (4418628).

Almost surely, 2^13255881 is an apocalyptic number.

It is an amenable number.

13255881 is a deficient number, since it is larger than the sum of its proper divisors (4418631).

13255881 is an equidigital number, since it uses as much as digits as its factorization.

13255881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4418630.

The product of its digits is 9600, while the sum is 33.

The square root of 13255881 is about 3640.8626724995. The cubic root of 13255881 is about 236.6661788877. Note that the first 3 decimals are identical.

The spelling of 13255881 in words is "thirteen million, two hundred fifty-five thousand, eight hundred eighty-one".