511801051 has 2 divisors, whose sum is σ = 511801052. Its totient is φ = 511801050.

The previous prime is 511801049. The next prime is 511801079. The reversal of 511801051 is 150108115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 511801051 - 2¹ = 511801049 is a prime.

Together with 511801049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (511801091) 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, 255900525 + 255900526.

It is an arithmetic number, because the mean of its divisors is an integer number (255900526).

Almost surely, 2^511801051 is an apocalyptic number.

511801051 is a deficient number, since it is larger than the sum of its proper divisors (1).

511801051 is an equidigital number, since it uses as much as digits as its factorization.

511801051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200, while the sum is 22.

The square root of 511801051 is about 22623.0203774828. The cubic root of 511801051 is about 799.8963673051.

Adding to 511801051 its reverse (150108115), we get a palindrome (661909166).

The spelling of 511801051 in words is "five hundred eleven million, eight hundred one thousand, fifty-one".