14345521 has 2 divisors, whose sum is σ = 14345522. Its totient is φ = 14345520.

The previous prime is 14345519. The next prime is 14345533. The reversal of 14345521 is 12554341.

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., 14288400 + 57121 = 3780^2 + 239^2 .

It is a cyclic number.

It is not a de Polignac number, because 14345521 - 2¹ = 14345519 is a prime.

It is a super-2 number, since 2×14345521² = 411587945522882, which contains 22 as substring.

Together with 14345519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (14345021) 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, 7172760 + 7172761.

It is an arithmetic number, because the mean of its divisors is an integer number (7172761).

Almost surely, 2^14345521 is an apocalyptic number.

It is an amenable number.

14345521 is a deficient number, since it is larger than the sum of its proper divisors (1).

14345521 is an equidigital number, since it uses as much as digits as its factorization.

14345521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 25.

The square root of 14345521 is about 3787.5481515091. The cubic root of 14345521 is about 242.9808844272.

Adding to 14345521 its reverse (12554341), we get a palindrome (26899862).

The spelling of 14345521 in words is "fourteen million, three hundred forty-five thousand, five hundred twenty-one".