44123521 has 8 divisors (see below), whose sum is σ = 47603304. Its totient is φ = 40656000.

The previous prime is 44123393. The next prime is 44123531. The reversal of 44123521 is 12532144.

It can be written as a sum of positive squares in 4 ways, for example, as 2016400 + 42107121 = 1420^2 + 6489^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 44123521 - 2⁷ = 44123393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44123492 and 44123501.

It is not an unprimeable number, because it can be changed into a prime (44123531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5271 + ... + 10771.

It is an arithmetic number, because the mean of its divisors is an integer number (5950413).

Almost surely, 2^44123521 is an apocalyptic number.

It is an amenable number.

44123521 is a deficient number, since it is larger than the sum of its proper divisors (3479783).

44123521 is a wasteful number, since it uses less digits than its factorization.

44123521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6131.

The product of its digits is 960, while the sum is 22.

The square root of 44123521 is about 6642.5538010618. The cubic root of 44123521 is about 353.3648825711.

Adding to 44123521 its reverse (12532144), we get a palindrome (56655665).

It can be divided in two parts, 44123 and 521, that added together give a palindrome (44644).

The spelling of 44123521 in words is "forty-four million, one hundred twenty-three thousand, five hundred twenty-one".