512751961 has 2 divisors, whose sum is σ = 512751962. Its totient is φ = 512751960.

The previous prime is 512751937. The next prime is 512751973. The reversal of 512751961 is 169157215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 512750736 + 1225 = 22644^2 + 35^2 .

It is a cyclic number.

It is not a de Polignac number, because 512751961 - 2¹³ = 512743769 is a prime.

It is a Chen prime.

It is equal to p_26991325 and since 512751961 and 26991325 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 512751961.

It is not a weakly prime, because it can be changed into another prime (512751931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256375980 + 256375981.

It is an arithmetic number, because the mean of its divisors is an integer number (256375981).

Almost surely, 2^512751961 is an apocalyptic number.

It is an amenable number.

512751961 is a deficient number, since it is larger than the sum of its proper divisors (1).

512751961 is an equidigital number, since it uses as much as digits as its factorization.

512751961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 37.

The square root of 512751961 is about 22644.0270490918. The cubic root of 512751961 is about 800.3914547769.

The spelling of 512751961 in words is "five hundred twelve million, seven hundred fifty-one thousand, nine hundred sixty-one".