491588 has 12 divisors (see below), whose sum is σ = 875280. Its totient is φ = 241512.

The previous prime is 491581. The next prime is 491591. The reversal of 491588 is 885194.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 491588.

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 3 ways as a sum of consecutive naturals, for example, 806 + ... + 1277.

It is an arithmetic number, because the mean of its divisors is an integer number (72940).

2⁴⁹¹⁵⁸⁸ is an apocalyptic number.

It is an amenable number.

491588 is a deficient number, since it is larger than the sum of its proper divisors (383692).

491588 is a wasteful number, since it uses less digits than its factorization.

491588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146 (or 2144 counting only the distinct ones).

The product of its digits is 11520, while the sum is 35.

The square root of 491588 is about 701.1333681975. The cubic root of 491588 is about 78.9224255862.

The spelling of 491588 in words is "four hundred ninety-one thousand, five hundred eighty-eight".