512421797 has 2 divisors, whose sum is σ = 512421798. Its totient is φ = 512421796.

The previous prime is 512421787. The next prime is 512421799. The reversal of 512421797 is 797124215.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 281199361 + 231222436 = 16769^2 + 15206^2 .

It is a cyclic number.

It is not a de Polignac number, because 512421797 - 2⁸ = 512421541 is a prime.

Together with 512421799, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 512421797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512421799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256210898 + 256210899.

It is an arithmetic number, because the mean of its divisors is an integer number (256210899).

Almost surely, 2^512421797 is an apocalyptic number.

It is an amenable number.

512421797 is a deficient number, since it is larger than the sum of its proper divisors (1).

512421797 is an equidigital number, since it uses as much as digits as its factorization.

512421797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 38.

The square root of 512421797 is about 22636.7355641223. The cubic root of 512421797 is about 800.2196256377.

The spelling of 512421797 in words is "five hundred twelve million, four hundred twenty-one thousand, seven hundred ninety-seven".