44828221 has 2 divisors, whose sum is σ = 44828222. Its totient is φ = 44828220.

The previous prime is 44828213. The next prime is 44828233. The reversal of 44828221 is 12282844.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29920900 + 14907321 = 5470^2 + 3861^2 .

It is a cyclic number.

It is not a de Polignac number, because 44828221 - 2³ = 44828213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44828261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22414110 + 22414111.

It is an arithmetic number, because the mean of its divisors is an integer number (22414111).

Almost surely, 2^44828221 is an apocalyptic number.

It is an amenable number.

44828221 is a deficient number, since it is larger than the sum of its proper divisors (1).

44828221 is an equidigital number, since it uses as much as digits as its factorization.

44828221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8192, while the sum is 31.

The square root of 44828221 is about 6695.3880395389. The cubic root of 44828221 is about 355.2361610517.

The spelling of 44828221 in words is "forty-four million, eight hundred twenty-eight thousand, two hundred twenty-one".