13053521 has 4 divisors (see below), whose sum is σ = 14057652. Its totient is φ = 12049392.

The previous prime is 13053517. The next prime is 13053527. The reversal of 13053521 is 12535031.

13053521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12535031 = 1453 ⋅8627.

It can be written as a sum of positive squares in 2 ways, for example, as 8473921 + 4579600 = 2911^2 + 2140^2 .

It is a cyclic number.

It is not a de Polignac number, because 13053521 - 2² = 13053517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13053493 and 13053502.

It is not an unprimeable number, because it can be changed into a prime (13053527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502046 + ... + 502071.

It is an arithmetic number, because the mean of its divisors is an integer number (3514413).

Almost surely, 2^13053521 is an apocalyptic number.

It is an amenable number.

13053521 is a deficient number, since it is larger than the sum of its proper divisors (1004131).

13053521 is a wasteful number, since it uses less digits than its factorization.

13053521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004130.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 13053521 is about 3612.9656793277. The cubic root of 13053521 is about 235.4557084526.

Adding to 13053521 its reverse (12535031), we get a palindrome (25588552).

The spelling of 13053521 in words is "thirteen million, fifty-three thousand, five hundred twenty-one".