44500021 has 2 divisors, whose sum is σ = 44500022. Its totient is φ = 44500020.

The previous prime is 44499979. The next prime is 44500039. The reversal of 44500021 is 12000544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31640625 + 12859396 = 5625^2 + 3586^2 .

It is a cyclic number.

It is not a de Polignac number, because 44500021 - 2¹⁵ = 44467253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 44499968 and 44500004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44500051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22250010 + 22250011.

It is an arithmetic number, because the mean of its divisors is an integer number (22250011).

Almost surely, 2^44500021 is an apocalyptic number.

It is an amenable number.

44500021 is a deficient number, since it is larger than the sum of its proper divisors (1).

44500021 is an equidigital number, since it uses as much as digits as its factorization.

44500021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 44500021 is about 6670.8336060795. The cubic root of 44500021 is about 354.3671088182.

Adding to 44500021 its reverse (12000544), we get a palindrome (56500565).

The spelling of 44500021 in words is "forty-four million, five hundred thousand, twenty-one".