2160971 has 2 divisors, whose sum is σ = 2160972. Its totient is φ = 2160970.

The previous prime is 2160967. The next prime is 2160997. The reversal of 2160971 is 1790612.

2160971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (2160997) can be obtained adding 2160971 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2160971 - 2² = 2160967 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2160971.

It is not a weakly prime, because it can be changed into another prime (2160931) 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 as a sum of consecutive naturals, namely, 1080485 + 1080486.

It is an arithmetic number, because the mean of its divisors is an integer number (1080486).

2^2160971 is an apocalyptic number.

2160971 is a deficient number, since it is larger than the sum of its proper divisors (1).

2160971 is an equidigital number, since it uses as much as digits as its factorization.

2160971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 2160971 is about 1470.0241494615. The cubic root of 2160971 is about 129.2854484639.

The spelling of 2160971 in words is "two million, one hundred sixty thousand, nine hundred seventy-one".