491295256 has 16 divisors (see below), whose sum is σ = 933798600. Its totient is φ = 242282304.

The previous prime is 491295247. The next prime is 491295283. The reversal of 491295256 is 652592194.

It is a congruent number.

It is an unprimeable number.

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, 420046 + ... + 421213.

Almost surely, 2^491295256 is an apocalyptic number.

It is an amenable number.

491295256 is a deficient number, since it is larger than the sum of its proper divisors (442503344).

491295256 is a wasteful number, since it uses less digits than its factorization.

491295256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841338 (or 841334 counting only the distinct ones).

The product of its digits is 194400, while the sum is 43.

The square root of 491295256 is about 22165.1811632569. The cubic root of 491295256 is about 789.0675619485.

The spelling of 491295256 in words is "four hundred ninety-one million, two hundred ninety-five thousand, two hundred fifty-six".