512860321 has 2 divisors, whose sum is σ = 512860322. Its totient is φ = 512860320.

The previous prime is 512860319. The next prime is 512860333. The reversal of 512860321 is 123068215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 328878225 + 183982096 = 18135^2 + 13564^2 .

It is a cyclic number.

It is not a de Polignac number, because 512860321 - 2¹ = 512860319 is a prime.

Together with 512860319, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 512860321.

It is not a weakly prime, because it can be changed into another prime (512860351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256430160 + 256430161.

It is an arithmetic number, because the mean of its divisors is an integer number (256430161).

Almost surely, 2^512860321 is an apocalyptic number.

It is an amenable number.

512860321 is a deficient number, since it is larger than the sum of its proper divisors (1).

512860321 is an equidigital number, since it uses as much as digits as its factorization.

512860321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 512860321 is about 22646.4196066398. The cubic root of 512860321 is about 800.4478331143.

The spelling of 512860321 in words is "five hundred twelve million, eight hundred sixty thousand, three hundred twenty-one".