13505715 has 24 divisors (see below), whose sum is σ = 24429600. Its totient is φ = 6889344.

The previous prime is 13505671. The next prime is 13505717. The reversal of 13505715 is 51750531.

13505715 is nontrivially palindromic in base 4.

13505715 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13505715 - 2¹¹ = 13503667 is a prime.

It is a super-2 number, since 2×13505715² = 364808675322450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13505717) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5490 + ... + 7559.

It is an arithmetic number, because the mean of its divisors is an integer number (1017900).

Almost surely, 2^13505715 is an apocalyptic number.

13505715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13505715 is a deficient number, since it is larger than the sum of its proper divisors (10923885).

13505715 is a wasteful number, since it uses less digits than its factorization.

13505715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13083 (or 13080 counting only the distinct ones).

The product of its (nonzero) digits is 2625, while the sum is 27.

The square root of 13505715 is about 3675.0122448776. The cubic root of 13505715 is about 238.1437530439.

The spelling of 13505715 in words is "thirteen million, five hundred five thousand, seven hundred fifteen".