1217001587 has 2 divisors, whose sum is σ = 1217001588. Its totient is φ = 1217001586.

The previous prime is 1217001571. The next prime is 1217001589. The reversal of 1217001587 is 7851007121.

It is a strong prime.

It is an emirp because it is prime and its reverse (7851007121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1217001587 - 2⁴ = 1217001571 is a prime.

Together with 1217001589, 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 (1217001589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608500793 + 608500794.

It is an arithmetic number, because the mean of its divisors is an integer number (608500794).

Almost surely, 2^1217001587 is an apocalyptic number.

1217001587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217001587 is an equidigital number, since it uses as much as digits as its factorization.

1217001587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3920, while the sum is 32.

The square root of 1217001587 is about 34885.5498308397. The cubic root of 1217001587 is about 1067.6536313029.

The spelling of 1217001587 in words is "one billion, two hundred seventeen million, one thousand, five hundred eighty-seven".