206550755 has 16 divisors (see below), whose sum is σ = 252188640. Its totient is φ = 162379008.

The previous prime is 206550739. The next prime is 206550781. The reversal of 206550755 is 557055602.

It is a cyclic number.

It is not a de Polignac number, because 206550755 - 2⁴ = 206550739 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75644 + ... + 78326.

It is an arithmetic number, because the mean of its divisors is an integer number (15761790).

Almost surely, 2^206550755 is an apocalyptic number.

206550755 is a deficient number, since it is larger than the sum of its proper divisors (45637885).

206550755 is a wasteful number, since it uses less digits than its factorization.

206550755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950.

The product of its (nonzero) digits is 52500, while the sum is 35.

The square root of 206550755 is about 14371.8737470102. The cubic root of 206550755 is about 591.1199211147.

The spelling of 206550755 in words is "two hundred six million, five hundred fifty thousand, seven hundred fifty-five".