206521150 has 48 divisors (see below), whose sum is σ = 420473088. Its totient is φ = 74844000.

The previous prime is 206521123. The next prime is 206521153. The reversal of 206521150 is 51125602.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206521153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 254245 + ... + 255055.

It is an arithmetic number, because the mean of its divisors is an integer number (8759856).

Almost surely, 2^206521150 is an apocalyptic number.

206521150 is an abundant number, since it is smaller than the sum of its proper divisors (213951938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206521150 is a wasteful number, since it uses less digits than its factorization.

206521150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297 (or 1292 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 206521150 is about 14370.8437469760. The cubic root of 206521150 is about 591.0916779493.

Adding to 206521150 its reverse (51125602), we get a palindrome (257646752).

The spelling of 206521150 in words is "two hundred six million, five hundred twenty-one thousand, one hundred fifty".