512534381 has 2 divisors, whose sum is σ = 512534382. Its totient is φ = 512534380.

The previous prime is 512534339. The next prime is 512534413. The reversal of 512534381 is 183435215.

It is an a-pointer prime, because the next prime (512534413) can be obtained adding 512534381 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 503329225 + 9205156 = 22435^2 + 3034^2 .

It is a cyclic number.

It is not a de Polignac number, because 512534381 - 2¹⁴ = 512517997 is a prime.

It is a super-2 number, since 2×512534381² = 525382983414106322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512534681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256267190 + 256267191.

It is an arithmetic number, because the mean of its divisors is an integer number (256267191).

Almost surely, 2^512534381 is an apocalyptic number.

It is an amenable number.

512534381 is a deficient number, since it is larger than the sum of its proper divisors (1).

512534381 is an equidigital number, since it uses as much as digits as its factorization.

512534381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 32.

The square root of 512534381 is about 22639.2221818684. Note that the first 3 decimals coincide. The cubic root of 512534381 is about 800.2782266637.

Adding to 512534381 its reverse (183435215), we get a palindrome (695969596).

The spelling of 512534381 in words is "five hundred twelve million, five hundred thirty-four thousand, three hundred eighty-one".