14545521 has 8 divisors (see below), whose sum is σ = 21548960. Its totient is φ = 9696996.

The previous prime is 14545519. The next prime is 14545543. The reversal of 14545521 is 12554541.

It is not a de Polignac number, because 14545521 - 2¹ = 14545519 is a prime.

It is a super-3 number, since 3×14545521³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 538723 = 14545521 / (1 + 4 + 5 + 4 + 5 + 5 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14545561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269335 + ... + 269388.

It is an arithmetic number, because the mean of its divisors is an integer number (2693620).

Almost surely, 2^14545521 is an apocalyptic number.

It is an amenable number.

14545521 is a deficient number, since it is larger than the sum of its proper divisors (7003439).

14545521 is an equidigital number, since it uses as much as digits as its factorization.

14545521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538732 (or 538726 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 14545521 is about 3813.8590692368. The cubic root of 14545521 is about 244.1048606443.

The spelling of 14545521 in words is "fourteen million, five hundred forty-five thousand, five hundred twenty-one".