492191 has 4 divisors (see below), whose sum is σ = 562512. Its totient is φ = 421872.

The previous prime is 492113. The next prime is 492227. The reversal of 492191 is 191294.

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

It is a cyclic number.

It is not a de Polignac number, because 492191 - 2¹⁰ = 491167 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 492191.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 492191.

It is not an unprimeable number, because it can be changed into a prime (492491) 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, 35150 + ... + 35163.

It is an arithmetic number, because the mean of its divisors is an integer number (140628).

2⁴⁹²¹⁹¹ is an apocalyptic number.

492191 is a deficient number, since it is larger than the sum of its proper divisors (70321).

492191 is an equidigital number, since it uses as much as digits as its factorization.

492191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70320.

The product of its digits is 648, while the sum is 26.

The square root of 492191 is about 701.5632544539. The cubic root of 492191 is about 78.9546821217.

The spelling of 492191 in words is "four hundred ninety-two thousand, one hundred ninety-one".