512420417 has 2 divisors, whose sum is σ = 512420418. Its totient is φ = 512420416.

The previous prime is 512420407. The next prime is 512420431. The reversal of 512420417 is 714024215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378069136 + 134351281 = 19444^2 + 11591^2 .

It is a cyclic number.

It is not a de Polignac number, because 512420417 - 2¹⁰ = 512419393 is a prime.

It is not a weakly prime, because it can be changed into another prime (512420407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256210208 + 256210209.

It is an arithmetic number, because the mean of its divisors is an integer number (256210209).

Almost surely, 2^512420417 is an apocalyptic number.

It is an amenable number.

512420417 is a deficient number, since it is larger than the sum of its proper divisors (1).

512420417 is an equidigital number, since it uses as much as digits as its factorization.

512420417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 512420417 is about 22636.7050826749. The cubic root of 512420417 is about 800.2189072815.

The spelling of 512420417 in words is "five hundred twelve million, four hundred twenty thousand, four hundred seventeen".