45120444 has 12 divisors (see below), whose sum is σ = 105281064. Its totient is φ = 15040144.

The previous prime is 45120443. The next prime is 45120463. The reversal of 45120444 is 44402154.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45120443) 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, 1880007 + ... + 1880030.

It is an arithmetic number, because the mean of its divisors is an integer number (8773422).

Almost surely, 2^45120444 is an apocalyptic number.

It is an amenable number.

45120444 is an abundant number, since it is smaller than the sum of its proper divisors (60160620).

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

45120444 is a wasteful number, since it uses less digits than its factorization.

45120444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3760044 (or 3760042 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 45120444 is about 6717.1752991864. The cubic root of 45120444 is about 356.0063858637.

Adding to 45120444 its reverse (44402154), we get a palindrome (89522598).

The spelling of 45120444 in words is "forty-five million, one hundred twenty thousand, four hundred forty-four".