491534 has 8 divisors (see below), whose sum is σ = 741960. Its totient is φ = 244216.

The previous prime is 491531. The next prime is 491537. The reversal of 491534 is 435194.

It is an interprime number because it is at equal distance from previous prime (491531) and next prime (491537).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329 + ... + 1044.

It is an arithmetic number, because the mean of its divisors is an integer number (92745).

2⁴⁹¹⁵³⁴ is an apocalyptic number.

491534 is a deficient number, since it is larger than the sum of its proper divisors (250426).

491534 is a wasteful number, since it uses less digits than its factorization.

491534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554.

The product of its digits is 2160, while the sum is 26.

The square root of 491534 is about 701.0948580613. The cubic root of 491534 is about 78.9195356546.

The spelling of 491534 in words is "four hundred ninety-one thousand, five hundred thirty-four".