490503581 has 2 divisors, whose sum is σ = 490503582. Its totient is φ = 490503580.

The previous prime is 490503577. The next prime is 490503619. The reversal of 490503581 is 185305094.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 338376025 + 152127556 = 18395^2 + 12334^2 .

It is a cyclic number.

It is not a de Polignac number, because 490503581 - 2² = 490503577 is a prime.

It is a super-2 number, since 2×490503581² = 481187525947647122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490503511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245251790 + 245251791.

It is an arithmetic number, because the mean of its divisors is an integer number (245251791).

Almost surely, 2^490503581 is an apocalyptic number.

It is an amenable number.

490503581 is a deficient number, since it is larger than the sum of its proper divisors (1).

490503581 is an equidigital number, since it uses as much as digits as its factorization.

490503581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 490503581 is about 22147.3154355105. The cubic root of 490503581 is about 788.6434986213.

The spelling of 490503581 in words is "four hundred ninety million, five hundred three thousand, five hundred eighty-one".