44500721 has 2 divisors, whose sum is σ = 44500722. Its totient is φ = 44500720.

The previous prime is 44500697. The next prime is 44500723. The reversal of 44500721 is 12700544.

44500721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29376400 + 15124321 = 5420^2 + 3889^2 .

It is a cyclic number.

It is not a de Polignac number, because 44500721 - 2¹⁸ = 44238577 is a prime.

Together with 44500723, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (44500723) 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, 22250360 + 22250361.

It is an arithmetic number, because the mean of its divisors is an integer number (22250361).

Almost surely, 2^44500721 is an apocalyptic number.

It is an amenable number.

44500721 is a deficient number, since it is larger than the sum of its proper divisors (1).

44500721 is an equidigital number, since it uses as much as digits as its factorization.

44500721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 44500721 is about 6670.8860730790. The cubic root of 44500721 is about 354.3689669122.

The spelling of 44500721 in words is "forty-four million, five hundred thousand, seven hundred twenty-one".