13081745 has 8 divisors (see below), whose sum is σ = 16032384. Its totient is φ = 10242544.

The previous prime is 13081729. The next prime is 13081751. The reversal of 13081745 is 54718031.

13081745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13081745 - 2⁴ = 13081729 is a prime.

It is a super-2 number, since 2×13081745² = 342264104490050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27599 + ... + 28068.

It is an arithmetic number, because the mean of its divisors is an integer number (2004048).

Almost surely, 2^13081745 is an apocalyptic number.

It is an amenable number.

13081745 is a deficient number, since it is larger than the sum of its proper divisors (2950639).

13081745 is an equidigital number, since it uses as much as digits as its factorization.

13081745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55719.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 13081745 is about 3616.8695027606. The cubic root of 13081745 is about 235.6252851280.

Adding to 13081745 its reverse (54718031), we get a palindrome (67799776).

The spelling of 13081745 in words is "thirteen million, eighty-one thousand, seven hundred forty-five".