13505345 has 16 divisors (see below), whose sum is σ = 18748800. Its totient is φ = 9147264.

The previous prime is 13505321. The next prime is 13505353. The reversal of 13505345 is 54350531.

It is not a de Polignac number, because 13505345 - 2⁶ = 13505281 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 581 + ... + 5229.

It is an arithmetic number, because the mean of its divisors is an integer number (1171800).

Almost surely, 2^13505345 is an apocalyptic number.

It is an amenable number.

13505345 is a deficient number, since it is larger than the sum of its proper divisors (5243455).

13505345 is an equidigital number, since it uses as much as digits as its factorization.

13505345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4744.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 13505345 is about 3674.9619045645. The cubic root of 13505345 is about 238.1415783104.

Adding to 13505345 its reverse (54350531), we get a palindrome (67855876).

The spelling of 13505345 in words is "thirteen million, five hundred five thousand, three hundred forty-five".