491215 has 8 divisors (see below), whose sum is σ = 624240. Its totient is φ = 369792.

The previous prime is 491213. The next prime is 491219. The reversal of 491215 is 512194.

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 491215 - 2¹ = 491213 is a prime.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2805 + ... + 2974.

It is an arithmetic number, because the mean of its divisors is an integer number (78030).

2⁴⁹¹²¹⁵ is an apocalyptic number.

491215 is a deficient number, since it is larger than the sum of its proper divisors (133025).

491215 is a wasteful number, since it uses less digits than its factorization.

491215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5801.

The product of its digits is 360, while the sum is 22.

The square root of 491215 is about 700.8673198259. The cubic root of 491215 is about 78.9024593317.

It can be divided in two parts, 4 and 91215, that added together give a palindrome (91219).

The spelling of 491215 in words is "four hundred ninety-one thousand, two hundred fifteen".