45145444 has 24 divisors (see below), whose sum is σ = 83684160. Its totient is φ = 21250656.

The previous prime is 45145417. The next prime is 45145459. The reversal of 45145444 is 44454154.

45145444 = 1360² + 1361² + ... + 1383².

45145444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×45145444² = 4076222227914272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10914 + ... + 14470.

It is an arithmetic number, because the mean of its divisors is an integer number (3486840).

Almost surely, 2^45145444 is an apocalyptic number.

It is an amenable number.

45145444 is a deficient number, since it is larger than the sum of its proper divisors (38538716).

45145444 is a wasteful number, since it uses less digits than its factorization.

45145444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747 (or 3745 counting only the distinct ones).

The product of its digits is 25600, while the sum is 31.

The square root of 45145444 is about 6719.0359427525. The cubic root of 45145444 is about 356.0721248472.

Adding to 45145444 its reverse (44454154), we get a palindrome (89599598).

The spelling of 45145444 in words is "forty-five million, one hundred forty-five thousand, four hundred forty-four".