497191 has 4 divisors (see below), whose sum is σ = 518832. Its totient is φ = 475552.

The previous prime is 497177. The next prime is 497197. The reversal of 497191 is 191794.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-497191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497197) by changing a digit.

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, 10786 + ... + 10831.

It is an arithmetic number, because the mean of its divisors is an integer number (129708).

2⁴⁹⁷¹⁹¹ is an apocalyptic number.

497191 is a deficient number, since it is larger than the sum of its proper divisors (21641).

497191 is a wasteful number, since it uses less digits than its factorization.

497191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21640.

The product of its digits is 2268, while the sum is 31.

The square root of 497191 is about 705.1177206680. The cubic root of 497191 is about 79.2211397333.

The spelling of 497191 in words is "four hundred ninety-seven thousand, one hundred ninety-one".