2881591 has 2 divisors, whose sum is σ = 2881592. Its totient is φ = 2881590.

The previous prime is 2881589. The next prime is 2881621. The reversal of 2881591 is 1951882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2881591 - 2¹ = 2881589 is a prime.

Together with 2881589, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2881531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1440795 + 1440796.

It is an arithmetic number, because the mean of its divisors is an integer number (1440796).

2^2881591 is an apocalyptic number.

2881591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2881591 is an equidigital number, since it uses as much as digits as its factorization.

2881591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 34.

The square root of 2881591 is about 1697.5249629976. The cubic root of 2881591 is about 142.3019265106.

The spelling of 2881591 in words is "two million, eight hundred eighty-one thousand, five hundred ninety-one".