1297305587 has 2 divisors, whose sum is σ = 1297305588. Its totient is φ = 1297305586.

The previous prime is 1297305553. The next prime is 1297305589. The reversal of 1297305587 is 7855037921.

It is a strong prime.

It is an emirp because it is prime and its reverse (7855037921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1297305587 - 2¹⁶ = 1297240051 is a prime.

It is a super-2 number, since 2×1297305587² = 3366003572122829138, which contains 22 as substring.

Together with 1297305589, 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 (1297305589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648652793 + 648652794.

It is an arithmetic number, because the mean of its divisors is an integer number (648652794).

Almost surely, 2^1297305587 is an apocalyptic number.

1297305587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297305587 is an equidigital number, since it uses as much as digits as its factorization.

1297305587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 47.

The square root of 1297305587 is about 36018.1285882540. The cubic root of 1297305587 is about 1090.6383453314.

The spelling of 1297305587 in words is "one billion, two hundred ninety-seven million, three hundred five thousand, five hundred eighty-seven".