491582 has 32 divisors (see below), whose sum is σ = 944832. Its totient is φ = 186624.

The previous prime is 491581. The next prime is 491591. The reversal of 491582 is 285194.

491582 is an undulating number in base 9.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6698 + ... + 6770.

It is an arithmetic number, because the mean of its divisors is an integer number (29526).

2⁴⁹¹⁵⁸² is an apocalyptic number.

491582 is a deficient number, since it is larger than the sum of its proper divisors (453250).

491582 is a wasteful number, since it uses less digits than its factorization.

491582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132.

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

The square root of 491582 is about 701.1290893980. The cubic root of 491582 is about 78.9221044932.

The spelling of 491582 in words is "four hundred ninety-one thousand, five hundred eighty-two".