44561021 has 2 divisors, whose sum is σ = 44561022. Its totient is φ = 44561020.

The previous prime is 44561009. The next prime is 44561059. The reversal of 44561021 is 12016544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30580900 + 13980121 = 5530^2 + 3739^2 .

It is a cyclic number.

It is not a de Polignac number, because 44561021 - 2¹⁴ = 44544637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44561921) 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, 22280510 + 22280511.

It is an arithmetic number, because the mean of its divisors is an integer number (22280511).

Almost surely, 2^44561021 is an apocalyptic number.

It is an amenable number.

44561021 is a deficient number, since it is larger than the sum of its proper divisors (1).

44561021 is an equidigital number, since it uses as much as digits as its factorization.

44561021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 44561021 is about 6675.4041825196. The cubic root of 44561021 is about 354.5289553635.

Adding to 44561021 its reverse (12016544), we get a palindrome (56577565).

The spelling of 44561021 in words is "forty-four million, five hundred sixty-one thousand, twenty-one".