490052081 has 4 divisors (see below), whose sum is σ = 518878692. Its totient is φ = 461225472.

The previous prime is 490052077. The next prime is 490052111. The reversal of 490052081 is 180250094.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 180250094 = 2 ⋅90125047.

It can be written as a sum of positive squares in 2 ways, for example, as 454542400 + 35509681 = 21320^2 + 5959^2 .

It is a cyclic number.

It is not a de Polignac number, because 490052081 - 2² = 490052077 is a prime.

It is a super-2 number, since 2×490052081² = 480302084184861122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (490052021) 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 in 3 ways as a sum of consecutive naturals, for example, 14413280 + ... + 14413313.

It is an arithmetic number, because the mean of its divisors is an integer number (129719673).

Almost surely, 2^490052081 is an apocalyptic number.

It is an amenable number.

490052081 is a deficient number, since it is larger than the sum of its proper divisors (28826611).

490052081 is a wasteful number, since it uses less digits than its factorization.

490052081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28826610.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 490052081 is about 22137.1199797986. The cubic root of 490052081 is about 788.4014468047.

The spelling of 490052081 in words is "four hundred ninety million, fifty-two thousand, eighty-one".