44161621 has 8 divisors (see below), whose sum is σ = 51298304. Its totient is φ = 37231920.

The previous prime is 44161619. The next prime is 44161651. The reversal of 44161621 is 12616144.

44161621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 44161621 - 2¹ = 44161619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44161651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51285 + ... + 52138.

It is an arithmetic number, because the mean of its divisors is an integer number (6412288).

Almost surely, 2^44161621 is an apocalyptic number.

It is an amenable number.

44161621 is a deficient number, since it is larger than the sum of its proper divisors (7136683).

44161621 is a wasteful number, since it uses less digits than its factorization.

44161621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103491.

The product of its digits is 1152, while the sum is 25.

The square root of 44161621 is about 6645.4210551326. The cubic root of 44161621 is about 353.4665617397.

Adding to 44161621 its reverse (12616144), we get a palindrome (56777765).

The spelling of 44161621 in words is "forty-four million, one hundred sixty-one thousand, six hundred twenty-one".