14521 has 4 divisors (see below), whose sum is σ = 15652. Its totient is φ = 13392.

The previous prime is 14519. The next prime is 14533. The reversal of 14521 is 12541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1296 + 13225 = 36^2 + 115^2 .

It is a cyclic number.

It is not a de Polignac number, because 14521 - 2¹ = 14519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 1117 = 14521 / (1 + 4 + 5 + 2 + 1).

It is an alternating number because its digits alternate between odd and even.

It is the 121-st Hogben number.

14521 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (14551) by changing a digit.

It is a nontrivial repunit in base 120.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546 + ... + 571.

It is an arithmetic number, because the mean of its divisors is an integer number (3913).

2¹⁴⁵²¹ is an apocalyptic number.

It is an amenable number.

14521 is a deficient number, since it is larger than the sum of its proper divisors (1131).

14521 is a wasteful number, since it uses less digits than its factorization.

14521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130.

The product of its digits is 40, while the sum is 13.

The square root of 14521 is about 120.5031119930. The cubic root of 14521 is about 24.3967611933.

It can be divided in two parts, 14 and 521, that added together give a palindrome (535).

The spelling of 14521 in words is "fourteen thousand, five hundred twenty-one".