512836981 has 2 divisors, whose sum is σ = 512836982. Its totient is φ = 512836980.

The previous prime is 512836967. The next prime is 512836993. The reversal of 512836981 is 189638215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 324324081 + 188512900 = 18009^2 + 13730^2 .

It is a cyclic number.

It is not a de Polignac number, because 512836981 - 2⁵ = 512836949 is a prime.

It is a super-2 number, since 2×512836981² = 526003538162388722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512836781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256418490 + 256418491.

It is an arithmetic number, because the mean of its divisors is an integer number (256418491).

Almost surely, 2^512836981 is an apocalyptic number.

It is an amenable number.

512836981 is a deficient number, since it is larger than the sum of its proper divisors (1).

512836981 is an equidigital number, since it uses as much as digits as its factorization.

512836981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 43.

The square root of 512836981 is about 22645.9042875307. The cubic root of 512836981 is about 800.4356902786.

The spelling of 512836981 in words is "five hundred twelve million, eight hundred thirty-six thousand, nine hundred eighty-one".