1266752503 has 2 divisors, whose sum is σ = 1266752504. Its totient is φ = 1266752502.

The previous prime is 1266752497. The next prime is 1266752519. The reversal of 1266752503 is 3052576621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1266752503 - 2²⁹ = 729881591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266752203) 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, 633376251 + 633376252.

It is an arithmetic number, because the mean of its divisors is an integer number (633376252).

Almost surely, 2^1266752503 is an apocalyptic number.

1266752503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266752503 is an equidigital number, since it uses as much as digits as its factorization.

1266752503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 1266752503 is about 35591.4667160543. The cubic root of 1266752503 is about 1082.0082953730.

The spelling of 1266752503 in words is "one billion, two hundred sixty-six million, seven hundred fifty-two thousand, five hundred three".