45043644 has 24 divisors (see below), whose sum is σ = 105210448. Its totient is φ = 14999040.

The previous prime is 45043643. The next prime is 45043657. The reversal of 45043644 is 44634054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45043643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21324 + ... + 23340.

Almost surely, 2^45043644 is an apocalyptic number.

It is an amenable number.

45043644 is an abundant number, since it is smaller than the sum of its proper divisors (60166804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45043644 is a wasteful number, since it uses less digits than its factorization.

45043644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3885 (or 3883 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 45043644 is about 6711.4561758235. The cubic root of 45043644 is about 355.8042837023.

Adding to 45043644 its reverse (44634054), we get a palindrome (89677698).

The spelling of 45043644 in words is "forty-five million, forty-three thousand, six hundred forty-four".