544221000 has 192 divisors, whose sum is σ = 1948218480. Its totient is φ = 136550400.

The previous prime is 544220993. The next prime is 544221043. The reversal of 544221000 is 122445.

544221000 is a `hidden beast` number, since 544 + 22 + 100 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 7001316 + 537219684 = 2646^2 + 23178^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 151222 + ... + 154778.

Almost surely, 2^544221000 is an apocalyptic number.

544221000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 544221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (974109240).

544221000 is an abundant number, since it is smaller than the sum of its proper divisors (1403997480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

544221000 is a wasteful number, since it uses less digits than its factorization.

544221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3601 (or 3584 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 544221000 is about 23328.5447467261. The cubic root of 544221000 is about 816.4415502429.

Adding to 544221000 its reverse (122445), we get a palindrome (544343445).

The spelling of 544221000 in words is "five hundred forty-four million, two hundred twenty-one thousand".