14109521 has 2 divisors, whose sum is σ = 14109522. Its totient is φ = 14109520.

The previous prime is 14109503. The next prime is 14109527. The reversal of 14109521 is 12590141.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7349521 + 6760000 = 2711^2 + 2600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14109521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (14109527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7054760 + 7054761.

It is an arithmetic number, because the mean of its divisors is an integer number (7054761).

Almost surely, 2^14109521 is an apocalyptic number.

It is an amenable number.

14109521 is a deficient number, since it is larger than the sum of its proper divisors (1).

14109521 is an equidigital number, since it uses as much as digits as its factorization.

14109521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 14109521 is about 3756.2642345820. The cubic root of 14109521 is about 241.6410736803.

Adding to 14109521 its reverse (12590141), we get a palindrome (26699662).

The spelling of 14109521 in words is "fourteen million, one hundred nine thousand, five hundred twenty-one".