513632489 has 2 divisors, whose sum is σ = 513632490. Its totient is φ = 513632488.

The previous prime is 513632477. The next prime is 513632507. The reversal of 513632489 is 984236315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 437646400 + 75986089 = 20920^2 + 8717^2 .

It is a cyclic number.

It is not a de Polignac number, because 513632489 - 2⁴ = 513632473 is a prime.

It is not a weakly prime, because it can be changed into another prime (513632419) 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, 256816244 + 256816245.

It is an arithmetic number, because the mean of its divisors is an integer number (256816245).

Almost surely, 2^513632489 is an apocalyptic number.

It is an amenable number.

513632489 is a deficient number, since it is larger than the sum of its proper divisors (1).

513632489 is an equidigital number, since it uses as much as digits as its factorization.

513632489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 41.

The square root of 513632489 is about 22663.4615405502. The cubic root of 513632489 is about 800.8493526185.

The spelling of 513632489 in words is "five hundred thirteen million, six hundred thirty-two thousand, four hundred eighty-nine".