220560281 has 2 divisors, whose sum is σ = 220560282. Its totient is φ = 220560280.

The previous prime is 220560253. The next prime is 220560289. The reversal of 220560281 is 182065022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199939600 + 20620681 = 14140^2 + 4541^2 .

It is a cyclic number.

It is not a de Polignac number, because 220560281 - 2⁶ = 220560217 is a prime.

It is a super-2 number, since 2×220560281² = 97293675109597922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220560281.

It is not a weakly prime, because it can be changed into another prime (220560289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110280140 + 110280141.

It is an arithmetic number, because the mean of its divisors is an integer number (110280141).

Almost surely, 2^220560281 is an apocalyptic number.

It is an amenable number.

220560281 is a deficient number, since it is larger than the sum of its proper divisors (1).

220560281 is an equidigital number, since it uses as much as digits as its factorization.

220560281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 220560281 is about 14851.2720330617. The cubic root of 220560281 is about 604.1931105181.

The spelling of 220560281 in words is "two hundred twenty million, five hundred sixty thousand, two hundred eighty-one".