511023197 has 2 divisors, whose sum is σ = 511023198. Its totient is φ = 511023196.

The previous prime is 511023167. The next prime is 511023299. The reversal of 511023197 is 791320115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 510488836 + 534361 = 22594^2 + 731^2 .

It is a cyclic number.

It is not a de Polignac number, because 511023197 - 2¹² = 511019101 is a prime.

It is a super-2 number, since 2×511023197² = 522289415744201618, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (511023157) 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, 255511598 + 255511599.

It is an arithmetic number, because the mean of its divisors is an integer number (255511599).

Almost surely, 2^511023197 is an apocalyptic number.

It is an amenable number.

511023197 is a deficient number, since it is larger than the sum of its proper divisors (1).

511023197 is an equidigital number, since it uses as much as digits as its factorization.

511023197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 511023197 is about 22605.8221925238. The cubic root of 511023197 is about 799.4909245590.

The spelling of 511023197 in words is "five hundred eleven million, twenty-three thousand, one hundred ninety-seven".