14500721 has 2 divisors, whose sum is σ = 14500722. Its totient is φ = 14500720.

The previous prime is 14500709. The next prime is 14500727. The reversal of 14500721 is 12700541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8620096 + 5880625 = 2936^2 + 2425^2 .

It is a cyclic number.

It is not a de Polignac number, because 14500721 - 2⁶ = 14500657 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 14500693 and 14500702.

It is not a weakly prime, because it can be changed into another prime (14500727) 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, 7250360 + 7250361.

It is an arithmetic number, because the mean of its divisors is an integer number (7250361).

Almost surely, 2^14500721 is an apocalyptic number.

It is an amenable number.

14500721 is a deficient number, since it is larger than the sum of its proper divisors (1).

14500721 is an equidigital number, since it uses as much as digits as its factorization.

14500721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 14500721 is about 3807.9812236932. The cubic root of 14500721 is about 243.8539897295.

The spelling of 14500721 in words is "fourteen million, five hundred thousand, seven hundred twenty-one".