1289032553 has 2 divisors, whose sum is σ = 1289032554. Its totient is φ = 1289032552.

The previous prime is 1289032517. The next prime is 1289032559. The reversal of 1289032553 is 3552309821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1045422889 + 243609664 = 32333^2 + 15608^2 .

It is an emirp because it is prime and its reverse (3552309821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1289032553 - 2¹⁰ = 1289031529 is a prime.

It is not a weakly prime, because it can be changed into another prime (1289032559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644516276 + 644516277.

It is an arithmetic number, because the mean of its divisors is an integer number (644516277).

Almost surely, 2^1289032553 is an apocalyptic number.

It is an amenable number.

1289032553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1289032553 is an equidigital number, since it uses as much as digits as its factorization.

1289032553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 1289032553 is about 35903.0994901554. The cubic root of 1289032553 is about 1088.3150334953.

The spelling of 1289032553 in words is "one billion, two hundred eighty-nine million, thirty-two thousand, five hundred fifty-three".