2891087 has 2 divisors, whose sum is σ = 2891088. Its totient is φ = 2891086.

The previous prime is 2891081. The next prime is 2891093. The reversal of 2891087 is 7801982.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2891081) and next prime (2891093).

It is a cyclic number.

It is not a de Polignac number, because 2891087 - 2⁶ = 2891023 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2891081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1445543 + 1445544.

It is an arithmetic number, because the mean of its divisors is an integer number (1445544).

2^2891087 is an apocalyptic number.

2891087 is a deficient number, since it is larger than the sum of its proper divisors (1).

2891087 is an equidigital number, since it uses as much as digits as its factorization.

2891087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 2891087 is about 1700.3196758257. The cubic root of 2891087 is about 142.4580691239.

The spelling of 2891087 in words is "two million, eight hundred ninety-one thousand, eighty-seven".