511930973 has 2 divisors, whose sum is σ = 511930974. Its totient is φ = 511930972.

The previous prime is 511930967. The next prime is 511931009. The reversal of 511930973 is 379039115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 326235844 + 185695129 = 18062^2 + 13627^2 .

It is a cyclic number.

It is not a de Polignac number, because 511930973 - 2¹⁴ = 511914589 is a prime.

It is a super-2 number, since 2×511930973² = 524146642233453458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (511930933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255965486 + 255965487.

It is an arithmetic number, because the mean of its divisors is an integer number (255965487).

Almost surely, 2^511930973 is an apocalyptic number.

It is an amenable number.

511930973 is a deficient number, since it is larger than the sum of its proper divisors (1).

511930973 is an equidigital number, since it uses as much as digits as its factorization.

511930973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25515, while the sum is 38.

The square root of 511930973 is about 22625.8916509383. The cubic root of 511930973 is about 799.9640468217.

The spelling of 511930973 in words is "five hundred eleven million, nine hundred thirty thousand, nine hundred seventy-three".