44545545 has 84 divisors (see below), whose sum is σ = 88965828. Its totient is φ = 21384000.

The previous prime is 44545541. The next prime is 44545547. The reversal of 44545545 is 54554544.

44545545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 31843449 + 12702096 = 5643^2 + 3564^2 .

It is not a de Polignac number, because 44545545 - 2² = 44545541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44545541) by changing a digit.

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 83 ways as a sum of consecutive naturals, for example, 440995 + ... + 441095.

It is an arithmetic number, because the mean of its divisors is an integer number (1059117).

Almost surely, 2^44545545 is an apocalyptic number.

44545545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

44545545 is a deficient number, since it is larger than the sum of its proper divisors (44420283).

44545545 is a wasteful number, since it uses less digits than its factorization.

44545545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 120 counting only the distinct ones).

The product of its digits is 160000, while the sum is 36.

The square root of 44545545 is about 6674.2449011105. The cubic root of 44545545 is about 354.4879080888.

It can be divided in two parts, 4454 and 5545, that added together give a palindrome (9999).

The spelling of 44545545 in words is "forty-four million, five hundred forty-five thousand, five hundred forty-five".