500641061 has 2 divisors, whose sum is σ = 500641062. Its totient is φ = 500641060.

The previous prime is 500641003. The next prime is 500641087. The reversal of 500641061 is 160146005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 488144836 + 12496225 = 22094^2 + 3535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-500641061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500640061) 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, 250320530 + 250320531.

It is an arithmetic number, because the mean of its divisors is an integer number (250320531).

Almost surely, 2^500641061 is an apocalyptic number.

It is an amenable number.

500641061 is a deficient number, since it is larger than the sum of its proper divisors (1).

500641061 is an equidigital number, since it uses as much as digits as its factorization.

500641061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 500641061 is about 22375.0097430146. The cubic root of 500641061 is about 794.0395880876.

Adding to 500641061 its reverse (160146005), we get a palindrome (660787066).

The spelling of 500641061 in words is "five hundred million, six hundred forty-one thousand, sixty-one".