13455581 has 8 divisors (see below), whose sum is σ = 13936128. Its totient is φ = 12978000.

The previous prime is 13455577. The next prime is 13455641. The reversal of 13455581 is 18555431.

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

It is a cyclic number.

It is not a de Polignac number, because 13455581 - 2² = 13455577 is a prime.

It is a super-2 number, since 2×13455581² = 362105320095122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13455511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12536 + ... + 13566.

It is an arithmetic number, because the mean of its divisors is an integer number (1742016).

Almost surely, 2^13455581 is an apocalyptic number.

It is an amenable number.

13455581 is a deficient number, since it is larger than the sum of its proper divisors (480547).

13455581 is a wasteful number, since it uses less digits than its factorization.

13455581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483.

The product of its digits is 12000, while the sum is 32.

The square root of 13455581 is about 3668.1849735257. The cubic root of 13455581 is about 237.8487198590.

The spelling of 13455581 in words is "thirteen million, four hundred fifty-five thousand, five hundred eighty-one".