44171021 has 2 divisors, whose sum is σ = 44171022. Its totient is φ = 44171020.

The previous prime is 44170969. The next prime is 44171041. The reversal of 44171021 is 12017144.

It is an a-pointer prime, because the next prime (44171041) can be obtained adding 44171021 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22221796 + 21949225 = 4714^2 + 4685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44171021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 44170984 and 44171002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44171041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22085510 + 22085511.

It is an arithmetic number, because the mean of its divisors is an integer number (22085511).

Almost surely, 2^44171021 is an apocalyptic number.

It is an amenable number.

44171021 is a deficient number, since it is larger than the sum of its proper divisors (1).

44171021 is an equidigital number, since it uses as much as digits as its factorization.

44171021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 44171021 is about 6646.1282714073. The cubic root of 44171021 is about 353.4916389439.

Adding to 44171021 its reverse (12017144), we get a palindrome (56188165).

The spelling of 44171021 in words is "forty-four million, one hundred seventy-one thousand, twenty-one".