201641652 has 36 divisors (see below), whose sum is σ = 514761156. Its totient is φ = 66547200.

The previous prime is 201641617. The next prime is 201641681. The reversal of 201641652 is 256146102.

201641652 is a `hidden beast` number, since 2 + 0 + 1 + 6 + 4 + 1 + 652 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 83832336 + 117809316 = 9156^2 + 10854^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

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, 24093 + ... + 31364.

It is an arithmetic number, because the mean of its divisors is an integer number (14298921).

Almost surely, 2^201641652 is an apocalyptic number.

It is an amenable number.

201641652 is an abundant number, since it is smaller than the sum of its proper divisors (313119504).

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

201641652 is a wasteful number, since it uses less digits than its factorization.

201641652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55568 (or 55563 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 201641652 is about 14200.0581688949. The cubic root of 201641652 is about 586.3992627484.

Adding to 201641652 its reverse (256146102), we get a palindrome (457787754).

The spelling of 201641652 in words is "two hundred one million, six hundred forty-one thousand, six hundred fifty-two".