2160855 has 24 divisors (see below), whose sum is σ = 3868800. Its totient is φ = 1114560.

The previous prime is 2160841. The next prime is 2160857. The reversal of 2160855 is 5580612.

2160855 is a `hidden beast` number, since 2 + 1 + 608 + 55 = 666.

It is not a de Polignac number, because 2160855 - 2¹⁰ = 2159831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2160857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 621 + ... + 2169.

It is an arithmetic number, because the mean of its divisors is an integer number (161200).

2^2160855 is an apocalyptic number.

2160855 is the 930-th heptagonal number.

2160855 is a deficient number, since it is larger than the sum of its proper divisors (1707945).

2160855 is a wasteful number, since it uses less digits than its factorization.

2160855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591 (or 1588 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 2160855 is about 1469.9846937979. The cubic root of 2160855 is about 129.2831350933.

The spelling of 2160855 in words is "two million, one hundred sixty thousand, eight hundred fifty-five".