44245621 has 4 divisors (see below), whose sum is σ = 50566432. Its totient is φ = 37924812.

The previous prime is 44245613. The next prime is 44245627. The reversal of 44245621 is 12654244.

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 a cyclic number.

It is not a de Polignac number, because 44245621 - 2³ = 44245613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44245621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44245627) 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, 3160395 + ... + 3160408.

It is an arithmetic number, because the mean of its divisors is an integer number (12641608).

Almost surely, 2^44245621 is an apocalyptic number.

It is an amenable number.

44245621 is a deficient number, since it is larger than the sum of its proper divisors (6320811).

44245621 is an equidigital number, since it uses as much as digits as its factorization.

44245621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6320810.

The product of its digits is 7680, while the sum is 28.

The square root of 44245621 is about 6651.7381938859. The cubic root of 44245621 is about 353.6905298606.

Adding to 44245621 its reverse (12654244), we get a palindrome (56899865).

The spelling of 44245621 in words is "forty-four million, two hundred forty-five thousand, six hundred twenty-one".