201028571 has 4 divisors (see below), whose sum is σ = 201258672. Its totient is φ = 200798472.

The previous prime is 201028561. The next prime is 201028603. The reversal of 201028571 is 175820102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201028571 - 2¹⁴ = 201012187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201028571.

It is not an unprimeable number, because it can be changed into a prime (201028501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113735 + ... + 115488.

It is an arithmetic number, because the mean of its divisors is an integer number (50314668).

Almost surely, 2^201028571 is an apocalyptic number.

201028571 is a deficient number, since it is larger than the sum of its proper divisors (230101).

201028571 is an equidigital number, since it uses as much as digits as its factorization.

201028571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230100.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 201028571 is about 14178.4544644330. The cubic root of 201028571 is about 585.8043538809.

Adding to 201028571 its reverse (175820102), we get a palindrome (376848673).

The spelling of 201028571 in words is "two hundred one million, twenty-eight thousand, five hundred seventy-one".