2656091 has 2 divisors, whose sum is σ = 2656092. Its totient is φ = 2656090.

The previous prime is 2656079. The next prime is 2656099. The reversal of 2656091 is 1906562.

2656091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2656091 - 2¹⁸ = 2393947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2656099) 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, 1328045 + 1328046.

It is an arithmetic number, because the mean of its divisors is an integer number (1328046).

2^2656091 is an apocalyptic number.

2656091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2656091 is an equidigital number, since it uses as much as digits as its factorization.

2656091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 2656091 is about 1629.7518215974. The cubic root of 2656091 is about 138.4886930518.

The spelling of 2656091 in words is "two million, six hundred fifty-six thousand, ninety-one".