491283 has 36 divisors (see below), whose sum is σ = 856440. Its totient is φ = 269568.

The previous prime is 491279. The next prime is 491297. The reversal of 491283 is 382194.

It is not a de Polignac number, because 491283 - 2² = 491279 is a prime.

491283 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25848 + ... + 25866.

It is an arithmetic number, because the mean of its divisors is an integer number (23790).

2⁴⁹¹²⁸³ is an apocalyptic number.

491283 is a deficient number, since it is larger than the sum of its proper divisors (365157).

491283 is a wasteful number, since it uses less digits than its factorization.

491283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68 (or 52 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 491283 is about 700.9158294688. The cubic root of 491283 is about 78.9061000455.

Subtracting from 491283 its product of digits (1728), we obtain a triangular number (489555 = T₉₈₉).

The spelling of 491283 in words is "four hundred ninety-one thousand, two hundred eighty-three".