220047556 has 9 divisors (see below), whose sum is σ = 385135149. Its totient is φ = 110008944.

The previous prime is 220047551. The next prime is 220047559. The reversal of 220047556 is 655740022.

The square root of 220047556 is 14834.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 179292100 + 40755456 = 13390^2 + 6384^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220047551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 25960 + ... + 33376.

Almost surely, 2^220047556 is an apocalyptic number.

220047556 is the 14834-th square number.

It is an amenable number.

220047556 is a deficient number, since it is larger than the sum of its proper divisors (165087593).

220047556 is an frugal number, since it uses more digits than its factorization.

220047556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14838 (or 7419 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The cubic root of 220047556 is about 603.7245685113.

Adding to 220047556 its reverse (655740022), we get a palindrome (875787578).

The spelling of 220047556 in words is "two hundred twenty million, forty-seven thousand, five hundred fifty-six".