13523505 has 8 divisors (see below), whose sum is σ = 21637632. Its totient is φ = 7212528.

The previous prime is 13523479. The next prime is 13523513. The reversal of 13523505 is 50532531.

13523505 is digitally balanced in base 2, base 3 and base 4, because in such bases 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 not a de Polignac number, because 13523505 - 2⁸ = 13523249 is a prime.

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, 450769 + ... + 450798.

It is an arithmetic number, because the mean of its divisors is an integer number (2704704).

Almost surely, 2^13523505 is an apocalyptic number.

13523505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13523505 is a deficient number, since it is larger than the sum of its proper divisors (8114127).

13523505 is an equidigital number, since it uses as much as digits as its factorization.

13523505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901575.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 13523505 is about 3677.4318484508. The cubic root of 13523505 is about 238.2482697506.

It can be divided in two parts, 13523 and 505, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 13523505 in words is "thirteen million, five hundred twenty-three thousand, five hundred five".