1011587 has 2 divisors, whose sum is σ = 1011588. Its totient is φ = 1011586.

The previous prime is 1011583. The next prime is 1011589. The reversal of 1011587 is 7851101.

It is a strong prime.

It is an emirp because it is prime and its reverse (7851101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1011587 - 2² = 1011583 is a prime.

Together with 1011589, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1011583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505793 + 505794.

It is an arithmetic number, because the mean of its divisors is an integer number (505794).

2^1011587 is an apocalyptic number.

1011587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011587 is an equidigital number, since it uses as much as digits as its factorization.

1011587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 23.

The square root of 1011587 is about 1005.7768142088. The cubic root of 1011587 is about 100.3847511007.

Adding to 1011587 its reverse (7851101), we get a palindrome (8862688).

The spelling of 1011587 in words is "one million, eleven thousand, five hundred eighty-seven".