220538485 has 16 divisors (see below), whose sum is σ = 269951472. Its totient is φ = 172915200.

The previous prime is 220538477. The next prime is 220538509. The reversal of 220538485 is 584835022.

220538485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 69322276 + 151216209 = 8326^2 + 12297^2 .

It is not a de Polignac number, because 220538485 - 2³ = 220538477 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 95545 + ... + 97825.

It is an arithmetic number, because the mean of its divisors is an integer number (16871967).

Almost surely, 2^220538485 is an apocalyptic number.

It is an amenable number.

220538485 is a deficient number, since it is larger than the sum of its proper divisors (49412987).

220538485 is a wasteful number, since it uses less digits than its factorization.

220538485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664.

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 220538485 is about 14850.5382057352. The cubic root of 220538485 is about 604.1732075286.

The spelling of 220538485 in words is "two hundred twenty million, five hundred thirty-eight thousand, four hundred eighty-five".