1297201487 has 2 divisors, whose sum is σ = 1297201488. Its totient is φ = 1297201486.

The previous prime is 1297201469. The next prime is 1297201519. The reversal of 1297201487 is 7841027921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1297201487 - 2¹⁶ = 1297135951 is a prime.

It is a super-2 number, since 2×1297201487² = 3365463395750022338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1297201427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648600743 + 648600744.

It is an arithmetic number, because the mean of its divisors is an integer number (648600744).

Almost surely, 2^1297201487 is an apocalyptic number.

1297201487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297201487 is an equidigital number, since it uses as much as digits as its factorization.

1297201487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 1297201487 is about 36016.6834536441. The cubic root of 1297201487 is about 1090.6091724339.

The spelling of 1297201487 in words is "one billion, two hundred ninety-seven million, two hundred one thousand, four hundred eighty-seven".