205554413 has 2 divisors, whose sum is σ = 205554414. Its totient is φ = 205554412.

The previous prime is 205554373. The next prime is 205554431. The reversal of 205554413 is 314455502.

Together with next prime (205554431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153685609 + 51868804 = 12397^2 + 7202^2 .

It is a cyclic number.

It is not a de Polignac number, because 205554413 - 2²⁰ = 204505837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205554913) 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, 102777206 + 102777207.

It is an arithmetic number, because the mean of its divisors is an integer number (102777207).

Almost surely, 2^205554413 is an apocalyptic number.

It is an amenable number.

205554413 is a deficient number, since it is larger than the sum of its proper divisors (1).

205554413 is an equidigital number, since it uses as much as digits as its factorization.

205554413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 205554413 is about 14337.1689325334. The cubic root of 205554413 is about 590.1679240486.

The spelling of 205554413 in words is "two hundred five million, five hundred fifty-four thousand, four hundred thirteen".