44172081 has 24 divisors (see below), whose sum is σ = 66564960. Its totient is φ = 28950048.

The previous prime is 44172067. The next prime is 44172083. The reversal of 44172081 is 18027144.

It is not a de Polignac number, because 44172081 - 2⁵ = 44172049 is a prime.

It is a super-2 number, since 2×44172081² = 3902345479741122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (44172083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143730 + ... + 144036.

It is an arithmetic number, because the mean of its divisors is an integer number (2773540).

Almost surely, 2^44172081 is an apocalyptic number.

It is an amenable number.

44172081 is a deficient number, since it is larger than the sum of its proper divisors (22392879).

44172081 is an equidigital number, since it uses as much as digits as its factorization.

44172081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 44172081 is about 6646.2080166062. The cubic root of 44172081 is about 353.4944665756.

The spelling of 44172081 in words is "forty-four million, one hundred seventy-two thousand, eighty-one".