44212161 has 24 divisors (see below), whose sum is σ = 69612960. Its totient is φ = 24887016.

The previous prime is 44212139. The next prime is 44212163. The reversal of 44212161 is 16121244.

It is a happy number.

44212161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 44212161 - 2⁶ = 44212097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (44212163) 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 23 ways as a sum of consecutive naturals, for example, 659850 + ... + 659916.

It is an arithmetic number, because the mean of its divisors is an integer number (2900540).

Almost surely, 2^44212161 is an apocalyptic number.

It is an amenable number.

44212161 is a deficient number, since it is larger than the sum of its proper divisors (25400799).

44212161 is an frugal number, since it uses more digits than its factorization.

44212161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 77 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 44212161 is about 6649.2225861374. Note that the first 3 decimals coincide. The cubic root of 44212161 is about 353.6013498896.

The spelling of 44212161 in words is "forty-four million, two hundred twelve thousand, one hundred sixty-one".