2187287 has 2 divisors, whose sum is σ = 2187288. Its totient is φ = 2187286.

The previous prime is 2187259. The next prime is 2187293. The reversal of 2187287 is 7827812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2187287 - 2¹⁶ = 2121751 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 (2187217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1093643 + 1093644.

It is an arithmetic number, because the mean of its divisors is an integer number (1093644).

2^2187287 is an apocalyptic number.

2187287 is a deficient number, since it is larger than the sum of its proper divisors (1).

2187287 is an equidigital number, since it uses as much as digits as its factorization.

2187287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12544, while the sum is 35.

The square root of 2187287 is about 1478.9479368795. The cubic root of 2187287 is about 129.8081390714.

The spelling of 2187287 in words is "two million, one hundred eighty-seven thousand, two hundred eighty-seven".