201686052 has 48 divisors (see below), whose sum is σ = 488275200. Its totient is φ = 64746240.

The previous prime is 201686047. The next prime is 201686063. The reversal of 201686052 is 250686102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36274 + ... + 41462.

It is an arithmetic number, because the mean of its divisors is an integer number (10172400).

Almost surely, 2^201686052 is an apocalyptic number.

It is an amenable number.

201686052 is an abundant number, since it is smaller than the sum of its proper divisors (286589148).

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

201686052 is a wasteful number, since it uses less digits than its factorization.

201686052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5316 (or 5314 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 201686052 is about 14201.6214567211. The cubic root of 201686052 is about 586.4422998496.

Subtracting 201686052 from its reverse (250686102), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 201686052 in words is "two hundred one million, six hundred eighty-six thousand, fifty-two".