205653229 has 2 divisors, whose sum is σ = 205653230. Its totient is φ = 205653228.

The previous prime is 205653223. The next prime is 205653241. The reversal of 205653229 is 922356502.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156625225 + 49028004 = 12515^2 + 7002^2 .

It is a cyclic number.

It is not a de Polignac number, because 205653229 - 2¹⁵ = 205620461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205653194 and 205653203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205653223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102826614 + 102826615.

It is an arithmetic number, because the mean of its divisors is an integer number (102826615).

Almost surely, 2^205653229 is an apocalyptic number.

It is an amenable number.

205653229 is a deficient number, since it is larger than the sum of its proper divisors (1).

205653229 is an equidigital number, since it uses as much as digits as its factorization.

205653229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 205653229 is about 14340.6146660455. The cubic root of 205653229 is about 590.2624792082.

The spelling of 205653229 in words is "two hundred five million, six hundred fifty-three thousand, two hundred twenty-nine".