512464021 has 2 divisors, whose sum is σ = 512464022. Its totient is φ = 512464020.

The previous prime is 512464003. The next prime is 512464079. The reversal of 512464021 is 120464215.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 370139121 + 142324900 = 19239^2 + 11930^2 .

It is a cyclic number.

It is not a de Polignac number, because 512464021 - 2⁹ = 512463509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512464091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256232010 + 256232011.

It is an arithmetic number, because the mean of its divisors is an integer number (256232011).

Almost surely, 2^512464021 is an apocalyptic number.

It is an amenable number.

512464021 is a deficient number, since it is larger than the sum of its proper divisors (1).

512464021 is an equidigital number, since it uses as much as digits as its factorization.

512464021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 512464021 is about 22637.6681882212. The cubic root of 512464021 is about 800.2416046308.

The spelling of 512464021 in words is "five hundred twelve million, four hundred sixty-four thousand, twenty-one".