205532653 has 2 divisors, whose sum is σ = 205532654. Its totient is φ = 205532652.

The previous prime is 205532629. The next prime is 205532681. The reversal of 205532653 is 356235502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193849929 + 11682724 = 13923^2 + 3418^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205532653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205532603) 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, 102766326 + 102766327.

It is an arithmetic number, because the mean of its divisors is an integer number (102766327).

Almost surely, 2^205532653 is an apocalyptic number.

It is an amenable number.

205532653 is a deficient number, since it is larger than the sum of its proper divisors (1).

205532653 is an equidigital number, since it uses as much as digits as its factorization.

205532653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 31.

The square root of 205532653 is about 14336.4100457541. The cubic root of 205532653 is about 590.1470982455.

The spelling of 205532653 in words is "two hundred five million, five hundred thirty-two thousand, six hundred fifty-three".