490531 has 4 divisors (see below), whose sum is σ = 494200. Its totient is φ = 486864.

The previous prime is 490519. The next prime is 490537. The reversal of 490531 is 135094.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135094 = 2 ⋅67547.

It is a cyclic number.

It is not a de Polignac number, because 490531 - 2⁵ = 490499 is a prime.

It is a super-2 number, since 2×490531² = 481241323922, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (490537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1626 + ... + 1903.

It is an arithmetic number, because the mean of its divisors is an integer number (123550).

2⁴⁹⁰⁵³¹ is an apocalyptic number.

490531 is a deficient number, since it is larger than the sum of its proper divisors (3669).

490531 is a wasteful number, since it uses less digits than its factorization.

490531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3668.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 490531 is about 700.3791830145. The cubic root of 490531 is about 78.8658193324.

The spelling of 490531 in words is "four hundred ninety thousand, five hundred thirty-one".