201087 has 6 divisors (see below), whose sum is σ = 290472. Its totient is φ = 134052.

The previous prime is 201073. The next prime is 201101. The reversal of 201087 is 780102.

It is an interprime number because it is at equal distance from previous prime (201073) and next prime (201101).

It is not a de Polignac number, because 201087 - 2¹⁰ = 200063 is a prime.

It is an Ulam number.

201087 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 201087.

It is not an unprimeable number, because it can be changed into a prime (201007) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 11163 + ... + 11180.

It is an arithmetic number, because the mean of its divisors is an integer number (48412).

2²⁰¹⁰⁸⁷ is an apocalyptic number.

201087 is a deficient number, since it is larger than the sum of its proper divisors (89385).

201087 is a wasteful number, since it uses less digits than its factorization.

201087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22349 (or 22346 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 201087 is about 448.4272516251. The cubic root of 201087 is about 58.5861103106.

Adding to 201087 its reverse (780102), we get a palindrome (981189).

The spelling of 201087 in words is "two hundred one thousand, eighty-seven".