14807521 has 2 divisors, whose sum is σ = 14807522. Its totient is φ = 14807520.

The previous prime is 14807503. The next prime is 14807537. The reversal of 14807521 is 12570841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11155600 + 3651921 = 3340^2 + 1911^2 .

It is a cyclic number.

It is not a de Polignac number, because 14807521 - 2⁵ = 14807489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14807521.

It is not a weakly prime, because it can be changed into another prime (14807501) 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, 7403760 + 7403761.

It is an arithmetic number, because the mean of its divisors is an integer number (7403761).

Almost surely, 2^14807521 is an apocalyptic number.

It is an amenable number.

14807521 is a deficient number, since it is larger than the sum of its proper divisors (1).

14807521 is an equidigital number, since it uses as much as digits as its factorization.

14807521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 14807521 is about 3848.0541836102. The cubic root of 14807521 is about 245.5617873276.

The spelling of 14807521 in words is "fourteen million, eight hundred seven thousand, five hundred twenty-one".