544234221 has 28 divisors (see below), whose sum is σ = 838073052. Its totient is φ = 352999296.

The previous prime is 544234219. The next prime is 544234261. The reversal of 544234221 is 122432445.

It can be written as a sum of positive squares in 2 ways, for example, as 437855625 + 106378596 = 20925^2 + 10314^2 .

It is not a de Polignac number, because 544234221 - 2¹ = 544234219 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544234261) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 16885 + ... + 37061.

Almost surely, 2^544234221 is an apocalyptic number.

It is an amenable number.

544234221 is a deficient number, since it is larger than the sum of its proper divisors (293838831).

544234221 is an equidigital number, since it uses as much as digits as its factorization.

544234221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20232 (or 20217 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 544234221 is about 23328.8281103016. The cubic root of 544234221 is about 816.4481615805.

Adding to 544234221 its reverse (122432445), we get a palindrome (666666666).

The spelling of 544234221 in words is "five hundred forty-four million, two hundred thirty-four thousand, two hundred twenty-one".