44172161 has 8 divisors (see below), whose sum is σ = 49097664. Its totient is φ = 39398320.

The previous prime is 44172143. The next prime is 44172173. The reversal of 44172161 is 16127144.

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 44172161 - 2²² = 39977857 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 44172161.

It is not an unprimeable number, because it can be changed into a prime (44172461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37301 + ... + 38466.

It is an arithmetic number, because the mean of its divisors is an integer number (6137208).

Almost surely, 2^44172161 is an apocalyptic number.

It is an amenable number.

44172161 is a deficient number, since it is larger than the sum of its proper divisors (4925503).

44172161 is a wasteful number, since it uses less digits than its factorization.

44172161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75831.

The product of its digits is 1344, while the sum is 26.

The square root of 44172161 is about 6646.2140350729. The cubic root of 44172161 is about 353.4946799800.

The spelling of 44172161 in words is "forty-four million, one hundred seventy-two thousand, one hundred sixty-one".