1001087 has 2 divisors, whose sum is σ = 1001088. Its totient is φ = 1001086.

The previous prime is 1001081. The next prime is 1001089. The reversal of 1001087 is 7801001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001087 - 2⁶ = 1001023 is a prime.

Together with 1001089, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500543 + 500544.

It is an arithmetic number, because the mean of its divisors is an integer number (500544).

2^1001087 is an apocalyptic number.

1001087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001087 is an equidigital number, since it uses as much as digits as its factorization.

1001087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 1001087 is about 1000.5433523841. The cubic root of 1001087 is about 100.0362202127.

Adding to 1001087 its reverse (7801001), we get a palindrome (8802088).

The spelling of 1001087 in words is "one million, one thousand, eighty-seven".