511515313 has 2 divisors, whose sum is σ = 511515314. Its totient is φ = 511515312.

The previous prime is 511515299. The next prime is 511515341. The reversal of 511515313 is 313515115.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 380367009 + 131148304 = 19503^2 + 11452^2 .

It is a cyclic number.

It is not a de Polignac number, because 511515313 - 2²⁵ = 477960881 is a prime.

It is not a weakly prime, because it can be changed into another prime (511515373) 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, 255757656 + 255757657.

It is an arithmetic number, because the mean of its divisors is an integer number (255757657).

Almost surely, 2^511515313 is an apocalyptic number.

It is an amenable number.

511515313 is a deficient number, since it is larger than the sum of its proper divisors (1).

511515313 is an equidigital number, since it uses as much as digits as its factorization.

511515313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1125, while the sum is 25.

The square root of 511515313 is about 22616.7042912976. The cubic root of 511515313 is about 799.7474791541.

The spelling of 511515313 in words is "five hundred eleven million, five hundred fifteen thousand, three hundred thirteen".