2087855 has 48 divisors (see below), whose sum is σ = 3447360. Its totient is φ = 1182720.

The previous prime is 2087837. The next prime is 2087857. The reversal of 2087855 is 5587802.

It is not a de Polignac number, because 2087855 - 2⁶ = 2087791 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹⁴ + 0 + 8 + 7⁶ + 8² + 5⁴ + 5⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2087857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71981 + ... + 72009.

It is an arithmetic number, because the mean of its divisors is an integer number (71820).

2^2087855 is an apocalyptic number.

2087855 is a deficient number, since it is larger than the sum of its proper divisors (1359505).

2087855 is a wasteful number, since it uses less digits than its factorization.

2087855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 2087855 is about 1444.9411752732. The cubic root of 2087855 is about 127.8105718530.

The spelling of 2087855 in words is "two million, eighty-seven thousand, eight hundred fifty-five".