13155081 has 4 divisors (see below), whose sum is σ = 17540112. Its totient is φ = 8770052.

The previous prime is 13155071. The next prime is 13155083. The reversal of 13155081 is 18055131.

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: 18055131 = 3 ⋅6018377.

It is a cyclic number.

It is not a de Polignac number, because 13155081 - 2⁹ = 13154569 is a prime.

It is a super-2 number, since 2×13155081² = 346112312233122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13155083) 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 3 ways as a sum of consecutive naturals, for example, 2192511 + ... + 2192516.

It is an arithmetic number, because the mean of its divisors is an integer number (4385028).

Almost surely, 2^13155081 is an apocalyptic number.

It is an amenable number.

13155081 is a deficient number, since it is larger than the sum of its proper divisors (4385031).

13155081 is an equidigital number, since it uses as much as digits as its factorization.

13155081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4385030.

The product of its (nonzero) digits is 600, while the sum is 24.

The square root of 13155081 is about 3626.9933829551. The cubic root of 13155081 is about 236.0647684436.

The spelling of 13155081 in words is "thirteen million, one hundred fifty-five thousand, eighty-one".