220554629 has 2 divisors, whose sum is σ = 220554630. Its totient is φ = 220554628.

The previous prime is 220554619. The next prime is 220554661. The reversal of 220554629 is 926455022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131629729 + 88924900 = 11473^2 + 9430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220554629 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220554619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110277314 + 110277315.

It is an arithmetic number, because the mean of its divisors is an integer number (110277315).

Almost surely, 2^220554629 is an apocalyptic number.

It is an amenable number.

220554629 is a deficient number, since it is larger than the sum of its proper divisors (1).

220554629 is an equidigital number, since it uses as much as digits as its factorization.

220554629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 220554629 is about 14851.0817451120. The cubic root of 220554629 is about 604.1879495274.

The spelling of 220554629 in words is "two hundred twenty million, five hundred fifty-four thousand, six hundred twenty-nine".