554224021 has 16 divisors (see below), whose sum is σ = 643903344. Its totient is φ = 472402944.

The previous prime is 554224003. The next prime is 554224049. The reversal of 554224021 is 120422455.

It can be written as a sum of positive squares in 8 ways, for example, as 42107121 + 512116900 = 6489^2 + 22630^2 .

It is not a de Polignac number, because 554224021 - 2¹³ = 554215829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554224001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11946 + ... + 35371.

It is an arithmetic number, because the mean of its divisors is an integer number (40243959).

Almost surely, 2^554224021 is an apocalyptic number.

It is an amenable number.

554224021 is a deficient number, since it is larger than the sum of its proper divisors (89679323).

554224021 is a wasteful number, since it uses less digits than its factorization.

554224021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47400.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 554224021 is about 23541.9629810260. The cubic root of 554224021 is about 821.4133967174.

Adding to 554224021 its reverse (120422455), we get a palindrome (674646476).

The spelling of 554224021 in words is "five hundred fifty-four million, two hundred twenty-four thousand, twenty-one".