511028489 has 2 divisors, whose sum is σ = 511028490. Its totient is φ = 511028488.

The previous prime is 511028447. The next prime is 511028533. The reversal of 511028489 is 984820115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 292136464 + 218892025 = 17092^2 + 14795^2 .

It is a cyclic number.

It is not a de Polignac number, because 511028489 - 2⁸ = 511028233 is a prime.

It is a super-5 number, since 5×511028489⁵ (a number of 45 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (511028989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255514244 + 255514245.

It is an arithmetic number, because the mean of its divisors is an integer number (255514245).

Almost surely, 2^511028489 is an apocalyptic number.

It is an amenable number.

511028489 is a deficient number, since it is larger than the sum of its proper divisors (1).

511028489 is an equidigital number, since it uses as much as digits as its factorization.

511028489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 511028489 is about 22605.9392417126. The cubic root of 511028489 is about 799.4936843106.

The spelling of 511028489 in words is "five hundred eleven million, twenty-eight thousand, four hundred eighty-nine".