512878361 has 2 divisors, whose sum is σ = 512878362. Its totient is φ = 512878360.

The previous prime is 512878319. The next prime is 512878391. The reversal of 512878361 is 163878215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 451350025 + 61528336 = 21245^2 + 7844^2 .

It is a cyclic number.

It is not a de Polignac number, because 512878361 - 2¹⁴ = 512861977 is a prime.

It is not a weakly prime, because it can be changed into another prime (512878391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256439180 + 256439181.

It is an arithmetic number, because the mean of its divisors is an integer number (256439181).

Almost surely, 2^512878361 is an apocalyptic number.

It is an amenable number.

512878361 is a deficient number, since it is larger than the sum of its proper divisors (1).

512878361 is an equidigital number, since it uses as much as digits as its factorization.

512878361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 41.

The square root of 512878361 is about 22646.8179000936. The cubic root of 512878361 is about 800.4572183270.

The spelling of 512878361 in words is "five hundred twelve million, eight hundred seventy-eight thousand, three hundred sixty-one".