2159291 has 2 divisors, whose sum is σ = 2159292. Its totient is φ = 2159290.

The previous prime is 2159281. The next prime is 2159299. The reversal of 2159291 is 1929512.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2159291 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2159299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079645 + 1079646.

It is an arithmetic number, because the mean of its divisors is an integer number (1079646).

2^2159291 is an apocalyptic number.

2159291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2159291 is an equidigital number, since it uses as much as digits as its factorization.

2159291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 29.

The square root of 2159291 is about 1469.4526191749. The cubic root of 2159291 is about 129.2519363894.

The spelling of 2159291 in words is "two million, one hundred fifty-nine thousand, two hundred ninety-one".