44654221 has 4 divisors (see below), whose sum is σ = 45096444. Its totient is φ = 44212000.

The previous prime is 44654219. The next prime is 44654273. The reversal of 44654221 is 12245644.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43626025 + 1028196 = 6605^2 + 1014^2 .

It is a cyclic number.

It is not a de Polignac number, because 44654221 - 2¹ = 44654219 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 44654221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44654021) 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, 220960 + ... + 221161.

It is an arithmetic number, because the mean of its divisors is an integer number (11274111).

Almost surely, 2^44654221 is an apocalyptic number.

It is an amenable number.

44654221 is a deficient number, since it is larger than the sum of its proper divisors (442223).

44654221 is a wasteful number, since it uses less digits than its factorization.

44654221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442222.

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

The square root of 44654221 is about 6682.3813869009. The cubic root of 44654221 is about 354.7759506719.

Adding to 44654221 its reverse (12245644), we get a palindrome (56899865).

The spelling of 44654221 in words is "forty-four million, six hundred fifty-four thousand, two hundred twenty-one".