44640052 has 6 divisors (see below), whose sum is σ = 78120098. Its totient is φ = 22320024.

The previous prime is 44640047. The next prime is 44640053. The reversal of 44640052 is 25004644.

It can be written as a sum of positive squares in only one way, i.e., 43112356 + 1527696 = 6566^2 + 1236^2 .

It is a junction number, because it is equal to n+sod(n) for n = 44639999 and 44640026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44640053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5580003 + ... + 5580010.

Almost surely, 2^44640052 is an apocalyptic number.

It is an amenable number.

44640052 is a deficient number, since it is larger than the sum of its proper divisors (33480046).

44640052 is a wasteful number, since it uses less digits than its factorization.

44640052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11160017 (or 11160015 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 44640052 is about 6681.3211268431. The cubic root of 44640052 is about 354.7384226614.

Adding to 44640052 its reverse (25004644), we get a palindrome (69644696).

The spelling of 44640052 in words is "forty-four million, six hundred forty thousand, fifty-two".