14664521 has 2 divisors, whose sum is σ = 14664522. Its totient is φ = 14664520.

The previous prime is 14664499. The next prime is 14664527. The reversal of 14664521 is 12546641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12673600 + 1990921 = 3560^2 + 1411^2 .

It is a cyclic number.

It is not a de Polignac number, because 14664521 - 2²² = 10470217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (14664527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7332260 + 7332261.

It is an arithmetic number, because the mean of its divisors is an integer number (7332261).

Almost surely, 2^14664521 is an apocalyptic number.

It is an amenable number.

14664521 is a deficient number, since it is larger than the sum of its proper divisors (1).

14664521 is an equidigital number, since it uses as much as digits as its factorization.

14664521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 29.

The square root of 14664521 is about 3829.4282863112. The cubic root of 14664521 is about 244.7687447191.

The spelling of 14664521 in words is "fourteen million, six hundred sixty-four thousand, five hundred twenty-one".