13505711 has 4 divisors (see below), whose sum is σ = 13514472. Its totient is φ = 13496952.

The previous prime is 13505671. The next prime is 13505717. The reversal of 13505711 is 11750531.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13505711 - 2¹⁴ = 13489327 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1385 + ... + 5378.

It is an arithmetic number, because the mean of its divisors is an integer number (3378618).

Almost surely, 2^13505711 is an apocalyptic number.

13505711 is a deficient number, since it is larger than the sum of its proper divisors (8761).

13505711 is an equidigital number, since it uses as much as digits as its factorization.

13505711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8760.

The product of its (nonzero) digits is 525, while the sum is 23.

The square root of 13505711 is about 3675.0117006616. The cubic root of 13505711 is about 238.1437295335.

The spelling of 13505711 in words is "thirteen million, five hundred five thousand, seven hundred eleven".