44521649 has 2 divisors, whose sum is σ = 44521650. Its totient is φ = 44521648.

The previous prime is 44521639. The next prime is 44521651. The reversal of 44521649 is 94612544.

44521649 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., 35188624 + 9333025 = 5932^2 + 3055^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44521649 is a prime.

Together with 44521651, 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 (44521639) 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, 22260824 + 22260825.

It is an arithmetic number, because the mean of its divisors is an integer number (22260825).

Almost surely, 2^44521649 is an apocalyptic number.

It is an amenable number.

44521649 is a deficient number, since it is larger than the sum of its proper divisors (1).

44521649 is an equidigital number, since it uses as much as digits as its factorization.

44521649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 35.

The square root of 44521649 is about 6672.4544959108. The cubic root of 44521649 is about 354.4245096188.

The spelling of 44521649 in words is "forty-four million, five hundred twenty-one thousand, six hundred forty-nine".