511852981 has 2 divisors, whose sum is σ = 511852982. Its totient is φ = 511852980.

The previous prime is 511852937. The next prime is 511853003. The reversal of 511852981 is 189258115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 364619025 + 147233956 = 19095^2 + 12134^2 .

It is a cyclic number.

It is not a de Polignac number, because 511852981 - 2¹⁵ = 511820213 is a prime.

It is a super-2 number, since 2×511852981² = 523986948317172722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (511852921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255926490 + 255926491.

It is an arithmetic number, because the mean of its divisors is an integer number (255926491).

Almost surely, 2^511852981 is an apocalyptic number.

It is an amenable number.

511852981 is a deficient number, since it is larger than the sum of its proper divisors (1).

511852981 is an equidigital number, since it uses as much as digits as its factorization.

511852981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 40.

The square root of 511852981 is about 22624.1680731027. The cubic root of 511852981 is about 799.9234202738.

The spelling of 511852981 in words is "five hundred eleven million, eight hundred fifty-two thousand, nine hundred eighty-one".