44003521 has 2 divisors, whose sum is σ = 44003522. Its totient is φ = 44003520.

The previous prime is 44003503. The next prime is 44003543. The reversal of 44003521 is 12530044.

44003521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43890625 + 112896 = 6625^2 + 336^2 .

It is a cyclic number.

It is not a de Polignac number, because 44003521 - 2²¹ = 41906369 is a prime.

It is not a weakly prime, because it can be changed into another prime (44003501) 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, 22001760 + 22001761.

It is an arithmetic number, because the mean of its divisors is an integer number (22001761).

Almost surely, 2^44003521 is an apocalyptic number.

It is an amenable number.

44003521 is a deficient number, since it is larger than the sum of its proper divisors (1).

44003521 is an equidigital number, since it uses as much as digits as its factorization.

44003521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 44003521 is about 6633.5149807625. The cubic root of 44003521 is about 353.0442502182.

Adding to 44003521 its reverse (12530044), we get a palindrome (56533565).

It can be divided in two parts, 4400 and 3521, that added together give a square (7921 = 89²).

The spelling of 44003521 in words is "forty-four million, three thousand, five hundred twenty-one".