510100055561 has 2 divisors, whose sum is σ = 510100055562. Its totient is φ = 510100055560.

The previous prime is 510100055539. The next prime is 510100055587. The reversal of 510100055561 is 165550001015.

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., 430381921225 + 79718134336 = 656035^2 + 282344^2 .

It is a cyclic number.

It is not a de Polignac number, because 510100055561 - 2³⁰ = 509026313737 is a prime.

It is not a weakly prime, because it can be changed into another prime (510100057561) 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, 255050027780 + 255050027781.

It is an arithmetic number, because the mean of its divisors is an integer number (255050027781).

Almost surely, 2^510100055561 is an apocalyptic number.

It is an amenable number.

510100055561 is a deficient number, since it is larger than the sum of its proper divisors (1).

510100055561 is an equidigital number, since it uses as much as digits as its factorization.

510100055561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3750, while the sum is 29.

Adding to 510100055561 its reverse (165550001015), we get a palindrome (675650056576).

The spelling of 510100055561 in words is "five hundred ten billion, one hundred million, fifty-five thousand, five hundred sixty-one".