206551349 has 2 divisors, whose sum is σ = 206551350. Its totient is φ = 206551348.

The previous prime is 206551313. The next prime is 206551379. The reversal of 206551349 is 943155602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205922500 + 628849 = 14350^2 + 793^2 .

It is a cyclic number.

It is not a de Polignac number, because 206551349 - 2¹⁶ = 206485813 is a prime.

It is a Sophie Germain prime.

It is a Chen 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 (206551379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103275674 + 103275675.

It is an arithmetic number, because the mean of its divisors is an integer number (103275675).

Almost surely, 2^206551349 is an apocalyptic number.

It is an amenable number.

206551349 is a deficient number, since it is larger than the sum of its proper divisors (1).

206551349 is an equidigital number, since it uses as much as digits as its factorization.

206551349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 206551349 is about 14371.8944123591. The cubic root of 206551349 is about 591.1204877630.

The spelling of 206551349 in words is "two hundred six million, five hundred fifty-one thousand, three hundred forty-nine".