44553721 has 2 divisors, whose sum is σ = 44553722. Its totient is φ = 44553720.

The previous prime is 44553713. The next prime is 44553781. The reversal of 44553721 is 12735544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38303721 + 6250000 = 6189^2 + 2500^2 .

It is a cyclic number.

It is not a de Polignac number, because 44553721 - 2³ = 44553713 is a prime.

It is not a weakly prime, because it can be changed into another prime (44553781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22276860 + 22276861.

It is an arithmetic number, because the mean of its divisors is an integer number (22276861).

Almost surely, 2^44553721 is an apocalyptic number.

It is an amenable number.

44553721 is a deficient number, since it is larger than the sum of its proper divisors (1).

44553721 is an equidigital number, since it uses as much as digits as its factorization.

44553721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 31.

The square root of 44553721 is about 6674.8573767535. The cubic root of 44553721 is about 354.5095946259.

The spelling of 44553721 in words is "forty-four million, five hundred fifty-three thousand, seven hundred twenty-one".