544221165 has 16 divisors (see below), whose sum is σ = 871265088. Its totient is φ = 290080896.

The previous prime is 544221157. The next prime is 544221191. The reversal of 544221165 is 561122445.

It is not a de Polignac number, because 544221165 - 2³ = 544221157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18289 + ... + 37721.

It is an arithmetic number, because the mean of its divisors is an integer number (54454068).

Almost surely, 2^544221165 is an apocalyptic number.

It is an amenable number.

544221165 is a deficient number, since it is larger than the sum of its proper divisors (327043923).

544221165 is a wasteful number, since it uses less digits than its factorization.

544221165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21308.

The product of its digits is 9600, while the sum is 30.

The square root of 544221165 is about 23328.5482831658. The cubic root of 544221165 is about 816.4416327540.

The spelling of 544221165 in words is "five hundred forty-four million, two hundred twenty-one thousand, one hundred sixty-five".