491715 has 36 divisors (see below), whose sum is σ = 995904. Its totient is φ = 223776.

The previous prime is 491707. The next prime is 491719. The reversal of 491715 is 517194.

It is not a de Polignac number, because 491715 - 2³ = 491707 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (491719) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2094 + ... + 2316.

It is an arithmetic number, because the mean of its divisors is an integer number (27664).

2⁴⁹¹⁷¹⁵ is an apocalyptic number.

491715 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

491715 is an abundant number, since it is smaller than the sum of its proper divisors (504189).

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

491715 is a wasteful number, since it uses less digits than its factorization.

491715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 238 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 491715 is about 701.2239299967. The cubic root of 491715 is about 78.9292214431.

It can be divided in two parts, 49 and 1715, that added together give a square (1764 = 42²).

The spelling of 491715 in words is "four hundred ninety-one thousand, seven hundred fifteen".