490382561 has 4 divisors (see below), whose sum is σ = 519228612. Its totient is φ = 461536512.

The previous prime is 490382551. The next prime is 490382579. The reversal of 490382561 is 165283094.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 165283094 = 2 ⋅82641547.

It can be written as a sum of positive squares in 2 ways, for example, as 338008225 + 152374336 = 18385^2 + 12344^2 .

It is a cyclic number.

It is not a de Polignac number, because 490382561 - 2¹⁰ = 490381537 is a prime.

It is a super-2 number, since 2×490382561² = 480950112265837442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490382531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14423000 + ... + 14423033.

It is an arithmetic number, because the mean of its divisors is an integer number (129807153).

Almost surely, 2^490382561 is an apocalyptic number.

It is an amenable number.

490382561 is a deficient number, since it is larger than the sum of its proper divisors (28846051).

490382561 is a wasteful number, since it uses less digits than its factorization.

490382561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28846050.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 490382561 is about 22144.5831073877. The cubic root of 490382561 is about 788.5786336605.

The spelling of 490382561 in words is "four hundred ninety million, three hundred eighty-two thousand, five hundred sixty-one".