44509561 has 2 divisors, whose sum is σ = 44509562. Its totient is φ = 44509560.

The previous prime is 44509513. The next prime is 44509639. The reversal of 44509561 is 16590544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36421225 + 8088336 = 6035^2 + 2844^2 .

It is a cyclic number.

It is not a de Polignac number, because 44509561 - 2¹⁵ = 44476793 is a prime.

It is a super-2 number, since 2×44509561² = 3962202040825442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44509501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22254780 + 22254781.

It is an arithmetic number, because the mean of its divisors is an integer number (22254781).

Almost surely, 2^44509561 is an apocalyptic number.

It is an amenable number.

44509561 is a deficient number, since it is larger than the sum of its proper divisors (1).

44509561 is an equidigital number, since it uses as much as digits as its factorization.

44509561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 44509561 is about 6671.5486208226. The cubic root of 44509561 is about 354.3924303093.

The spelling of 44509561 in words is "forty-four million, five hundred nine thousand, five hundred sixty-one".