510100561 has 2 divisors, whose sum is σ = 510100562. Its totient is φ = 510100560.

The previous prime is 510100559. The next prime is 510100573. The reversal of 510100561 is 165001015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 393784336 + 116316225 = 19844^2 + 10785^2 .

It is a cyclic number.

It is not a de Polignac number, because 510100561 - 2¹ = 510100559 is a prime.

Together with 510100559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (510104561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255050280 + 255050281.

It is an arithmetic number, because the mean of its divisors is an integer number (255050281).

Almost surely, 2^510100561 is an apocalyptic number.

It is an amenable number.

510100561 is a deficient number, since it is larger than the sum of its proper divisors (1).

510100561 is an equidigital number, since it uses as much as digits as its factorization.

510100561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 510100561 is about 22585.4059294935. The cubic root of 510100561 is about 799.0094829553.

Adding to 510100561 its reverse (165001015), we get a palindrome (675101576).

The spelling of 510100561 in words is "five hundred ten million, one hundred thousand, five hundred sixty-one".