44645 has 4 divisors (see below), whose sum is σ = 53580. Its totient is φ = 35712.

The previous prime is 44641. The next prime is 44647. The reversal of 44645 is 54644.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7396 + 37249 = 86^2 + 193^2 .

It is a cyclic number.

It is not a de Polignac number, because 44645 - 2² = 44641 is a prime.

It is a d-powerful number, because it can be written as 4⁶ + 4⁷ + 6⁵ + 4⁷ + 5 .

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 44645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4460 + ... + 4469.

It is an arithmetic number, because the mean of its divisors is an integer number (13395).

2⁴⁴⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

44645 is a deficient number, since it is larger than the sum of its proper divisors (8935).

44645 is an equidigital number, since it uses as much as digits as its factorization.

44645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8934.

The product of its digits is 1920, while the sum is 23.

The square root of 44645 is about 211.2936345468. The cubic root of 44645 is about 35.4751528835.

Subtracting 44645 from its reverse (54644), we obtain a palindrome (9999).

The spelling of 44645 in words is "forty-four thousand, six hundred forty-five".