511044461 has 2 divisors, whose sum is σ = 511044462. Its totient is φ = 511044460.

The previous prime is 511044451. The next prime is 511044503. The reversal of 511044461 is 164440115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 511031236 + 13225 = 22606^2 + 115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-511044461 is a prime.

It is a super-2 number, since 2×511044461² = 522332882237561042, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 511044461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (511044431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255522230 + 255522231.

It is an arithmetic number, because the mean of its divisors is an integer number (255522231).

Almost surely, 2^511044461 is an apocalyptic number.

It is an amenable number.

511044461 is a deficient number, since it is larger than the sum of its proper divisors (1).

511044461 is an equidigital number, since it uses as much as digits as its factorization.

511044461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 511044461 is about 22606.2925089454. The cubic root of 511044461 is about 799.5020135136.

Adding to 511044461 its reverse (164440115), we get a palindrome (675484576).

The spelling of 511044461 in words is "five hundred eleven million, forty-four thousand, four hundred sixty-one".