44553421 has 4 divisors (see below), whose sum is σ = 48603744. Its totient is φ = 40503100.

The previous prime is 44553419. The next prime is 44553427. The reversal of 44553421 is 12435544.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 44553421 - 2¹ = 44553419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44553421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44553427) 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, 2025145 + ... + 2025166.

It is an arithmetic number, because the mean of its divisors is an integer number (12150936).

Almost surely, 2^44553421 is an apocalyptic number.

It is an amenable number.

44553421 is a deficient number, since it is larger than the sum of its proper divisors (4050323).

44553421 is a wasteful number, since it uses less digits than its factorization.

44553421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4050322.

The product of its digits is 9600, while the sum is 28.

The square root of 44553421 is about 6674.8349043253. The cubic root of 44553421 is about 354.5087989339.

Adding to 44553421 its reverse (12435544), we get a palindrome (56988965).

The spelling of 44553421 in words is "forty-four million, five hundred fifty-three thousand, four hundred twenty-one".