506494561 has 2 divisors, whose sum is σ = 506494562. Its totient is φ = 506494560.

The previous prime is 506494559. The next prime is 506494567. The reversal of 506494561 is 165494605.

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., 437604561 + 68890000 = 20919^2 + 8300^2 .

It is a cyclic number.

It is not a de Polignac number, because 506494561 - 2¹ = 506494559 is a prime.

Together with 506494559, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (506494567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253247280 + 253247281.

It is an arithmetic number, because the mean of its divisors is an integer number (253247281).

Almost surely, 2^506494561 is an apocalyptic number.

It is an amenable number.

506494561 is a deficient number, since it is larger than the sum of its proper divisors (1).

506494561 is an equidigital number, since it uses as much as digits as its factorization.

506494561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 506494561 is about 22505.4340326953. The cubic root of 506494561 is about 797.1222444202.

The spelling of 506494561 in words is "five hundred six million, four hundred ninety-four thousand, five hundred sixty-one".