490550881 has 4 divisors (see below), whose sum is σ = 499806612. Its totient is φ = 481295152.

The previous prime is 490550869. The next prime is 490550887. The reversal of 490550881 is 188055094.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 188055094 = 2 ⋅94027547.

It can be written as a sum of positive squares in 2 ways, for example, as 250145856 + 240405025 = 15816^2 + 15505^2 .

It is a cyclic number.

It is not a de Polignac number, because 490550881 - 2⁵ = 490550849 is a prime.

It is a super-2 number, since 2×490550881² = 481280333699752322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490550887) 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, 4627786 + ... + 4627891.

It is an arithmetic number, because the mean of its divisors is an integer number (124951653).

Almost surely, 2^490550881 is an apocalyptic number.

It is an amenable number.

490550881 is a deficient number, since it is larger than the sum of its proper divisors (9255731).

490550881 is an equidigital number, since it uses as much as digits as its factorization.

490550881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9255730.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 490550881 is about 22148.3832592810. The cubic root of 490550881 is about 788.6688478337.

The spelling of 490550881 in words is "four hundred ninety million, five hundred fifty thousand, eight hundred eighty-one".