491285755 has 8 divisors (see below), whose sum is σ = 620571600. Its totient is φ = 372342816.

The previous prime is 491285747. The next prime is 491285759. The reversal of 491285755 is 557582194.

491285755 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 491285755 - 2³ = 491285747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (491285759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2585620 + ... + 2585809.

It is an arithmetic number, because the mean of its divisors is an integer number (77571450).

Almost surely, 2^491285755 is an apocalyptic number.

491285755 is a deficient number, since it is larger than the sum of its proper divisors (129285845).

491285755 is a wasteful number, since it uses less digits than its factorization.

491285755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5171453.

The product of its digits is 504000, while the sum is 46.

The square root of 491285755 is about 22164.9668395872. The cubic root of 491285755 is about 789.0624754083.

The spelling of 491285755 in words is "four hundred ninety-one million, two hundred eighty-five thousand, seven hundred fifty-five".