510550561 has 2 divisors, whose sum is σ = 510550562. Its totient is φ = 510550560.

The previous prime is 510550559. The next prime is 510550571. The reversal of 510550561 is 165055015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 315417600 + 195132961 = 17760^2 + 13969^2 .

It is a cyclic number.

It is not a de Polignac number, because 510550561 - 2¹ = 510550559 is a prime.

Together with 510550559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (510550571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255275280 + 255275281.

It is an arithmetic number, because the mean of its divisors is an integer number (255275281).

Almost surely, 2^510550561 is an apocalyptic number.

It is an amenable number.

510550561 is a deficient number, since it is larger than the sum of its proper divisors (1).

510550561 is an equidigital number, since it uses as much as digits as its factorization.

510550561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 510550561 is about 22595.3659187011. The cubic root of 510550561 is about 799.2443703587.

The spelling of 510550561 in words is "five hundred ten million, five hundred fifty thousand, five hundred sixty-one".