220505017 has 4 divisors (see below), whose sum is σ = 220596516. Its totient is φ = 220413520.

The previous prime is 220504981. The next prime is 220505027. The reversal of 220505017 is 710505022.

220505017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 133194681 + 87310336 = 11541^2 + 9344^2 .

It is a cyclic number.

It is not a de Polignac number, because 220505017 - 2¹⁹ = 219980729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220505027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42034 + ... + 46987.

It is an arithmetic number, because the mean of its divisors is an integer number (55149129).

Almost surely, 2^220505017 is an apocalyptic number.

It is an amenable number.

220505017 is a deficient number, since it is larger than the sum of its proper divisors (91499).

220505017 is an equidigital number, since it uses as much as digits as its factorization.

220505017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91498.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 220505017 is about 14849.4113351338. The cubic root of 220505017 is about 604.1426437144.

The spelling of 220505017 in words is "two hundred twenty million, five hundred five thousand, seventeen".