555224420 has 48 divisors (see below), whose sum is σ = 1237647600. Its totient is φ = 208502784.

The previous prime is 555224413. The next prime is 555224431. The reversal of 555224420 is 24422555.

It can be written as a sum of positive squares in 8 ways, for example, as 17355556 + 537868864 = 4166^2 + 23192^2 .

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, 150842 + ... + 154478.

It is an arithmetic number, because the mean of its divisors is an integer number (25784325).

Almost surely, 2^555224420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 555224420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (618823800).

555224420 is an abundant number, since it is smaller than the sum of its proper divisors (682423180).

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

555224420 is a wasteful number, since it uses less digits than its factorization.

555224420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4112 (or 4110 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 555224420 is about 23563.2005466151. The cubic root of 555224420 is about 821.9073288810.

Adding to 555224420 its reverse (24422555), we get a palindrome (579646975).

The spelling of 555224420 in words is "five hundred fifty-five million, two hundred twenty-four thousand, four hundred twenty".