201850 has 24 divisors (see below), whose sum is σ = 410688. Its totient is φ = 73200.

The previous prime is 201847. The next prime is 201881. The reversal of 201850 is 58102.

It is a happy number.

201850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 367 + ... + 733.

It is an arithmetic number, because the mean of its divisors is an integer number (17112).

2²⁰¹⁸⁵⁰ is an apocalyptic number.

201850 is the 367-th pentagonal number.

201850 is an abundant number, since it is smaller than the sum of its proper divisors (208838).

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

201850 is a wasteful number, since it uses less digits than its factorization.

201850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 201850 is about 449.2771972847. The cubic root of 201850 is about 58.6601160615.

Adding to 201850 its product of nonzero digits (80), we get a triangular number (201930 = T₆₃₅).

Adding to 201850 its reverse (58102), we get a palindrome (259952).

The spelling of 201850 in words is "two hundred one thousand, eight hundred fifty".