220550609 has 2 divisors, whose sum is σ = 220550610. Its totient is φ = 220550608.

The previous prime is 220550507. The next prime is 220550641. The reversal of 220550609 is 906055022.

220550609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197318209 + 23232400 = 14047^2 + 4820^2 .

It is a cyclic number.

It is not a de Polignac number, because 220550609 - 2¹⁶ = 220485073 is a prime.

It is a super-2 number, since 2×220550609² = 97285142260541762, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220520609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110275304 + 110275305.

It is an arithmetic number, because the mean of its divisors is an integer number (110275305).

Almost surely, 2^220550609 is an apocalyptic number.

It is an amenable number.

220550609 is a deficient number, since it is larger than the sum of its proper divisors (1).

220550609 is an equidigital number, since it uses as much as digits as its factorization.

220550609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 220550609 is about 14850.9464008190. The cubic root of 220550609 is about 604.1842787055.

The spelling of 220550609 in words is "two hundred twenty million, five hundred fifty thousand, six hundred nine".