14505509 has 2 divisors, whose sum is σ = 14505510. Its totient is φ = 14505508.

The previous prime is 14505503. The next prime is 14505511. The reversal of 14505509 is 90550541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8850625 + 5654884 = 2975^2 + 2378^2 .

It is an emirp because it is prime and its reverse (90550541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14505509 - 2¹⁶ = 14439973 is a prime.

Together with 14505511, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₉₄₀₈₀₈ and since 14505509 and 940808 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14505503) 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, 7252754 + 7252755.

It is an arithmetic number, because the mean of its divisors is an integer number (7252755).

Almost surely, 2^14505509 is an apocalyptic number.

It is an amenable number.

14505509 is a deficient number, since it is larger than the sum of its proper divisors (1).

14505509 is an equidigital number, since it uses as much as digits as its factorization.

14505509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 14505509 is about 3808.6098513762. The cubic root of 14505509 is about 243.8808261978.

The spelling of 14505509 in words is "fourteen million, five hundred five thousand, five hundred nine".