220484521 has 16 divisors (see below), whose sum is σ = 229863744. Its totient is φ = 211345344.

The previous prime is 220484519. The next prime is 220484527. The reversal of 220484521 is 125484022.

It is not a de Polignac number, because 220484521 - 2¹ = 220484519 is a prime.

It is a super-2 number, since 2×220484521² = 97226848001198882, 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 220484521.

It is not an unprimeable number, because it can be changed into a prime (220484527) 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 15 ways as a sum of consecutive naturals, for example, 795835 + ... + 796111.

It is an arithmetic number, because the mean of its divisors is an integer number (14366484).

Almost surely, 2^220484521 is an apocalyptic number.

It is an amenable number.

220484521 is a deficient number, since it is larger than the sum of its proper divisors (9379223).

220484521 is a wasteful number, since it uses less digits than its factorization.

220484521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600.

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 220484521 is about 14848.7211907289. The cubic root of 220484521 is about 604.1239247279.

It can be divided in two parts, 22048 and 4521, that added together give a square (26569 = 163²).

The spelling of 220484521 in words is "two hundred twenty million, four hundred eighty-four thousand, five hundred twenty-one".