44145641 has 2 divisors, whose sum is σ = 44145642. Its totient is φ = 44145640.

The previous prime is 44145637. The next prime is 44145653. The reversal of 44145641 is 14654144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42445225 + 1700416 = 6515^2 + 1304^2 .

It is a cyclic number.

It is not a de Polignac number, because 44145641 - 2² = 44145637 is a prime.

It is not a weakly prime, because it can be changed into another prime (44145601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22072820 + 22072821.

It is an arithmetic number, because the mean of its divisors is an integer number (22072821).

Almost surely, 2^44145641 is an apocalyptic number.

It is an amenable number.

44145641 is a deficient number, since it is larger than the sum of its proper divisors (1).

44145641 is an equidigital number, since it uses as much as digits as its factorization.

44145641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 29.

The square root of 44145641 is about 6644.2186147056. The cubic root of 44145641 is about 353.4239223244.

Adding to 44145641 its reverse (14654144), we get a palindrome (58799785).

The spelling of 44145641 in words is "forty-four million, one hundred forty-five thousand, six hundred forty-one".