510055561 has 2 divisors, whose sum is σ = 510055562. Its totient is φ = 510055560.

The previous prime is 510055549. The next prime is 510055577. The reversal of 510055561 is 165550015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 381459961 + 128595600 = 19531^2 + 11340^2 .

It is a cyclic number.

It is not a de Polignac number, because 510055561 - 2²³ = 501666953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (510055541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255027780 + 255027781.

It is an arithmetic number, because the mean of its divisors is an integer number (255027781).

Almost surely, 2^510055561 is an apocalyptic number.

It is an amenable number.

510055561 is a deficient number, since it is larger than the sum of its proper divisors (1).

510055561 is an equidigital number, since it uses as much as digits as its factorization.

510055561 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 28.

The square root of 510055561 is about 22584.4096889868. The cubic root of 510055561 is about 798.9859866183.

The spelling of 510055561 in words is "five hundred ten million, fifty-five thousand, five hundred sixty-one".