512820001 has 2 divisors, whose sum is σ = 512820002. Its totient is φ = 512820000.

The previous prime is 512819999. The next prime is 512820017. The reversal of 512820001 is 100028215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 423536400 + 89283601 = 20580^2 + 9449^2 .

It is a cyclic number.

It is not a de Polignac number, because 512820001 - 2¹ = 512819999 is a prime.

Together with 512819999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (512820041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256410000 + 256410001.

It is an arithmetic number, because the mean of its divisors is an integer number (256410001).

Almost surely, 2^512820001 is an apocalyptic number.

It is an amenable number.

512820001 is a deficient number, since it is larger than the sum of its proper divisors (1).

512820001 is an equidigital number, since it uses as much as digits as its factorization.

512820001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 512820001 is about 22645.5293821982. The cubic root of 512820001 is about 800.4268560560.

Adding to 512820001 its reverse (100028215), we get a palindrome (612848216).

The spelling of 512820001 in words is "five hundred twelve million, eight hundred twenty thousand, one".