491256 has 24 divisors (see below), whose sum is σ = 1330680. Its totient is φ = 163728.

The previous prime is 491251. The next prime is 491261. The reversal of 491256 is 652194.

It is an interprime number because it is at equal distance from previous prime (491251) and next prime (491261).

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3340 + ... + 3483.

It is an arithmetic number, because the mean of its divisors is an integer number (55445).

2⁴⁹¹²⁵⁶ is an apocalyptic number.

It is an amenable number.

491256 is an abundant number, since it is smaller than the sum of its proper divisors (839424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491256 is a wasteful number, since it uses less digits than its factorization.

491256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6835 (or 6828 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 491256 is about 700.8965686890. The cubic root of 491256 is about 78.9046545081.

It can be divided in two parts, 491 and 256, that added together give a palindrome (747).

The spelling of 491256 in words is "four hundred ninety-one thousand, two hundred fifty-six".