206550851 has 8 divisors (see below), whose sum is σ = 223440000. Its totient is φ = 189804672.

The previous prime is 206550821. The next prime is 206550859. The reversal of 206550851 is 158055602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206550851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206550859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32726 + ... + 38523.

It is an arithmetic number, because the mean of its divisors is an integer number (27930000).

Almost surely, 2^206550851 is an apocalyptic number.

206550851 is a deficient number, since it is larger than the sum of its proper divisors (16889149).

206550851 is a wasteful number, since it uses less digits than its factorization.

206550851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71485.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 206550851 is about 14371.8770868666. The cubic root of 206550851 is about 591.1200126943.

The spelling of 206550851 in words is "two hundred six million, five hundred fifty thousand, eight hundred fifty-one".