13534521 has 32 divisors (see below), whose sum is σ = 24235008. Its totient is φ = 6488640.

The previous prime is 13534519. The next prime is 13534523. The reversal of 13534521 is 12543531.

13534521 is digitally balanced in base 2, base 4 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13534519) and next prime (13534523).

It is not a de Polignac number, because 13534521 - 2¹ = 13534519 is a prime.

13534521 is strictly pandigital in base 8.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13534491 and 13534500.

It is not an unprimeable number, because it can be changed into a prime (13534523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 750 + ... + 5256.

It is an arithmetic number, because the mean of its divisors is an integer number (757344).

Almost surely, 2^13534521 is an apocalyptic number.

13534521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13534521 is a deficient number, since it is larger than the sum of its proper divisors (10700487).

13534521 is a wasteful number, since it uses less digits than its factorization.

13534521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4541.

The product of its digits is 1800, while the sum is 24.

The square root of 13534521 is about 3678.9293279431. The cubic root of 13534521 is about 238.3129430885.

The spelling of 13534521 in words is "thirteen million, five hundred thirty-four thousand, five hundred twenty-one".