220430545 has 8 divisors (see below), whose sum is σ = 266046696. Its totient is φ = 175324416.

The previous prime is 220430543. The next prime is 220430579. The reversal of 220430545 is 545034022.

It can be written as a sum of positive squares in 4 ways, for example, as 97752769 + 122677776 = 9887^2 + 11076^2 .

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 220430545 - 2¹ = 220430543 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220430543) 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 7 ways as a sum of consecutive naturals, for example, 126552 + ... + 128281.

It is an arithmetic number, because the mean of its divisors is an integer number (33255837).

Almost surely, 2^220430545 is an apocalyptic number.

It is an amenable number.

220430545 is a deficient number, since it is larger than the sum of its proper divisors (45616151).

220430545 is a wasteful number, since it uses less digits than its factorization.

220430545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255011.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 220430545 is about 14846.9035492253. The cubic root of 220430545 is about 604.0746229234.

Adding to 220430545 its reverse (545034022), we get a palindrome (765464567).

The spelling of 220430545 in words is "two hundred twenty million, four hundred thirty thousand, five hundred forty-five".