44564521 has 2 divisors, whose sum is σ = 44564522. Its totient is φ = 44564520.

The previous prime is 44564491. The next prime is 44564567. The reversal of 44564521 is 12546544.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42771600 + 1792921 = 6540^2 + 1339^2 .

It is a cyclic number.

It is not a de Polignac number, because 44564521 - 2⁵ = 44564489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (44564321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22282260 + 22282261.

It is an arithmetic number, because the mean of its divisors is an integer number (22282261).

Almost surely, 2^44564521 is an apocalyptic number.

It is an amenable number.

44564521 is a deficient number, since it is larger than the sum of its proper divisors (1).

44564521 is an equidigital number, since it uses as much as digits as its factorization.

44564521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19200, while the sum is 31.

The square root of 44564521 is about 6675.6663337827. Note that the first 3 decimals coincide. The cubic root of 44564521 is about 354.5382371591.

The spelling of 44564521 in words is "forty-four million, five hundred sixty-four thousand, five hundred twenty-one".