495491 has 2 divisors, whose sum is σ = 495492. Its totient is φ = 495490.

The previous prime is 495461. The next prime is 495511. The reversal of 495491 is 194594.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 495491 - 2¹⁸ = 233347 is a prime.

It is a super-2 number, since 2×495491² = 491022662162, which contains 22 as substring.

It is a Chen prime.

It is a zygodrome in base 2.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 495491.

It is not a weakly prime, because it can be changed into another prime (495401) 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 as a sum of consecutive naturals, namely, 247745 + 247746.

It is an arithmetic number, because the mean of its divisors is an integer number (247746).

2⁴⁹⁵⁴⁹¹ is an apocalyptic number.

495491 is a deficient number, since it is larger than the sum of its proper divisors (1).

495491 is an equidigital number, since it uses as much as digits as its factorization.

495491 is an odious number, because the sum of its binary digits is odd.

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

The square root of 495491 is about 703.9112159925. The cubic root of 495491 is about 79.1307454148.

The spelling of 495491 in words is "four hundred ninety-five thousand, four hundred ninety-one".