220055729 has 2 divisors, whose sum is σ = 220055730. Its totient is φ = 220055728.

The previous prime is 220055713. The next prime is 220055747. The reversal of 220055729 is 927550022.

It is a happy number.

220055729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189805729 + 30250000 = 13777^2 + 5500^2 .

It is a cyclic number.

It is not a de Polignac number, because 220055729 - 2⁴ = 220055713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220055695 and 220055704.

It is not a weakly prime, because it can be changed into another prime (220255729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110027864 + 110027865.

It is an arithmetic number, because the mean of its divisors is an integer number (110027865).

Almost surely, 2^220055729 is an apocalyptic number.

It is an amenable number.

220055729 is a deficient number, since it is larger than the sum of its proper divisors (1).

220055729 is an equidigital number, since it uses as much as digits as its factorization.

220055729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 220055729 is about 14834.2754794429. The cubic root of 220055729 is about 603.7320429256.

The spelling of 220055729 in words is "two hundred twenty million, fifty-five thousand, seven hundred twenty-nine".