14520521 has 6 divisors (see below), whose sum is σ = 15179850. Its totient is φ = 13888688.

The previous prime is 14520511. The next prime is 14520523. The reversal of 14520521 is 12502541.

14520521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 13542400 + 978121 = 3680^2 + 989^2 .

It is not a de Polignac number, because 14520521 - 2¹⁴ = 14504137 is a prime.

It is a super-2 number, since 2×14520521² = 421691060222882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 14520493 and 14520502.

It is not an unprimeable number, because it can be changed into a prime (14520523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13196 + ... + 14253.

It is an arithmetic number, because the mean of its divisors is an integer number (2529975).

Almost surely, 2^14520521 is an apocalyptic number.

It is an amenable number.

14520521 is a deficient number, since it is larger than the sum of its proper divisors (659329).

14520521 is an equidigital number, since it uses as much as digits as its factorization.

14520521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27495 (or 27472 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 14520521 is about 3810.5801395588. The cubic root of 14520521 is about 243.9649293409.

The spelling of 14520521 in words is "fourteen million, five hundred twenty thousand, five hundred twenty-one".