14165521 has 2 divisors, whose sum is σ = 14165522. Its totient is φ = 14165520.

The previous prime is 14165519. The next prime is 14165617. The reversal of 14165521 is 12556141.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13950225 + 215296 = 3735^2 + 464^2 .

It is a cyclic number.

It is not a de Polignac number, because 14165521 - 2¹ = 14165519 is a prime.

Together with 14165519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (14165321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7082760 + 7082761.

It is an arithmetic number, because the mean of its divisors is an integer number (7082761).

Almost surely, 2^14165521 is an apocalyptic number.

It is an amenable number.

14165521 is a deficient number, since it is larger than the sum of its proper divisors (1).

14165521 is an equidigital number, since it uses as much as digits as its factorization.

14165521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 25.

The square root of 14165521 is about 3763.7110675502. The cubic root of 14165521 is about 241.9603388775.

The spelling of 14165521 in words is "fourteen million, one hundred sixty-five thousand, five hundred twenty-one".