44550721 has 2 divisors, whose sum is σ = 44550722. Its totient is φ = 44550720.

The previous prime is 44550713. The next prime is 44550731. The reversal of 44550721 is 12705544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39237696 + 5313025 = 6264^2 + 2305^2 .

It is a cyclic number.

It is not a de Polignac number, because 44550721 - 2³ = 44550713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44550721.

It is not a weakly prime, because it can be changed into another prime (44550731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22275360 + 22275361.

It is an arithmetic number, because the mean of its divisors is an integer number (22275361).

Almost surely, 2^44550721 is an apocalyptic number.

It is an amenable number.

44550721 is a deficient number, since it is larger than the sum of its proper divisors (1).

44550721 is an equidigital number, since it uses as much as digits as its factorization.

44550721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 44550721 is about 6674.6326490677. The cubic root of 44550721 is about 354.5016375452.

The spelling of 44550721 in words is "forty-four million, five hundred fifty thousand, seven hundred twenty-one".