44553138 has 64 divisors (see below), whose sum is σ = 110714880. Its totient is φ = 11664000.

The previous prime is 44553137. The next prime is 44553149. The reversal of 44553138 is 83135544.

It is a junction number, because it is equal to n+sod(n) for n = 44553099 and 44553108.

It is not an unprimeable number, because it can be changed into a prime (44553137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23838 + ... + 25638.

It is an arithmetic number, because the mean of its divisors is an integer number (1729920).

Almost surely, 2^44553138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44553138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55357440).

44553138 is an abundant number, since it is smaller than the sum of its proper divisors (66161742).

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

44553138 is a wasteful number, since it uses less digits than its factorization.

44553138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863.

The product of its digits is 28800, while the sum is 33.

The square root of 44553138 is about 6674.8137052655. The cubic root of 44553138 is about 354.5080483278.

The spelling of 44553138 in words is "forty-four million, five hundred fifty-three thousand, one hundred thirty-eight".