2160287 has 4 divisors (see below), whose sum is σ = 2182656. Its totient is φ = 2137920.

The previous prime is 2160283. The next prime is 2160293. The reversal of 2160287 is 7820612.

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 2160287 - 2² = 2160283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2160283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11039 + ... + 11232.

It is an arithmetic number, because the mean of its divisors is an integer number (545664).

2^2160287 is an apocalyptic number.

2160287 is a deficient number, since it is larger than the sum of its proper divisors (22369).

2160287 is an equidigital number, since it uses as much as digits as its factorization.

2160287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22368.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 2160287 is about 1469.7914818096. The cubic root of 2160287 is about 129.2718063591.

Adding to 2160287 its reverse (7820612), we get a palindrome (9980899).

The spelling of 2160287 in words is "two million, one hundred sixty thousand, two hundred eighty-seven".