44564491 has 2 divisors, whose sum is σ = 44564492. Its totient is φ = 44564490.

The previous prime is 44564489. The next prime is 44564521. The reversal of 44564491 is 19446544.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44564491 - 2¹ = 44564489 is a prime.

Together with 44564489, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_2693395 and since 44564491 and 2693395 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44564491.

It is not a weakly prime, because it can be changed into another prime (44564461) 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, 22282245 + 22282246.

It is an arithmetic number, because the mean of its divisors is an integer number (22282246).

Almost surely, 2^44564491 is an apocalyptic number.

44564491 is a deficient number, since it is larger than the sum of its proper divisors (1).

44564491 is an equidigital number, since it uses as much as digits as its factorization.

44564491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 37.

The square root of 44564491 is about 6675.6640868156. The cubic root of 44564491 is about 354.5381576029.

The spelling of 44564491 in words is "forty-four million, five hundred sixty-four thousand, four hundred ninety-one".