491495 has 4 divisors (see below), whose sum is σ = 589800. Its totient is φ = 393192.

The previous prime is 491489. The next prime is 491497. The reversal of 491495 is 594194.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 594194 = 2 ⋅297097.

It is a cyclic number.

It is not a de Polignac number, because 491495 - 2¹⁶ = 425959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49145 + ... + 49154.

It is an arithmetic number, because the mean of its divisors is an integer number (147450).

2⁴⁹¹⁴⁹⁵ is an apocalyptic number.

491495 is a deficient number, since it is larger than the sum of its proper divisors (98305).

491495 is an equidigital number, since it uses as much as digits as its factorization.

491495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98304.

The product of its digits is 6480, while the sum is 32.

The square root of 491495 is about 701.0670438696. The cubic root of 491495 is about 78.9174483502.

The spelling of 491495 in words is "four hundred ninety-one thousand, four hundred ninety-five".