44312645 has 18 divisors (see below), whose sum is σ = 57832758. Its totient is φ = 32580288.

The previous prime is 44312633. The next prime is 44312647. The reversal of 44312645 is 54621344.

It can be written as a sum of positive squares in 9 ways, for example, as 4761124 + 39551521 = 2182^2 + 6289^2 .

It is not a de Polignac number, because 44312645 - 2⁴ = 44312629 is a prime.

It is a super-2 number, since 2×44312645² = 3927221013792050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44312647) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 193391 + ... + 193619.

It is an arithmetic number, because the mean of its divisors is an integer number (3212931).

Almost surely, 2^44312645 is an apocalyptic number.

It is an amenable number.

44312645 is a deficient number, since it is larger than the sum of its proper divisors (13520113).

44312645 is an equidigital number, since it uses as much as digits as its factorization.

44312645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 247 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 44312645 is about 6656.7743690169. The cubic root of 44312645 is about 353.8690318505.

Multiplying 44312645 by its product of digits (11520), we get a square (510481670400 = 714480²).

Adding to 44312645 its reverse (54621344), we get a palindrome (98933989).

The spelling of 44312645 in words is "forty-four million, three hundred twelve thousand, six hundred forty-five".