512300081 has 2 divisors, whose sum is σ = 512300082. Its totient is φ = 512300080.

The previous prime is 512300027. The next prime is 512300111. The reversal of 512300081 is 180003215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 510760000 + 1540081 = 22600^2 + 1241^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-512300081 is a prime.

It is a super-2 number, since 2×512300081² = 524902745985213122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (512300281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256150040 + 256150041.

It is an arithmetic number, because the mean of its divisors is an integer number (256150041).

Almost surely, 2^512300081 is an apocalyptic number.

It is an amenable number.

512300081 is a deficient number, since it is larger than the sum of its proper divisors (1).

512300081 is an equidigital number, since it uses as much as digits as its factorization.

512300081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 512300081 is about 22634.0469426040. The cubic root of 512300081 is about 800.1562616634.

Adding to 512300081 its reverse (180003215), we get a palindrome (692303296).

The spelling of 512300081 in words is "five hundred twelve million, three hundred thousand, eighty-one".