1054544221 has 8 divisors (see below), whose sum is σ = 1119162744. Its totient is φ = 990213120.

The previous prime is 1054544189. The next prime is 1054544269. The reversal of 1054544221 is 1224454501.

It can be written as a sum of positive squares in 4 ways, for example, as 31248100 + 1023296121 = 5590^2 + 31989^2 .

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 1054544221 - 2⁵ = 1054544189 is a prime.

It is a super-2 number, since 2×1054544221² = 2224127028088993682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1054544221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1054548221) 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, 64270 + ... + 78991.

It is an arithmetic number, because the mean of its divisors is an integer number (139895343).

Almost surely, 2^1054544221 is an apocalyptic number.

It is an amenable number.

1054544221 is a deficient number, since it is larger than the sum of its proper divisors (64618523).

1054544221 is a wasteful number, since it uses less digits than its factorization.

1054544221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143711.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 1054544221 is about 32473.7466424803. The cubic root of 1054544221 is about 1017.8605100270.

Adding to 1054544221 its reverse (1224454501), we get a palindrome (2278998722).

The spelling of 1054544221 in words is "one billion, fifty-four million, five hundred forty-four thousand, two hundred twenty-one".