495871 has 4 divisors (see below), whose sum is σ = 513000. Its totient is φ = 478744.

The previous prime is 495851. The next prime is 495877. The reversal of 495871 is 178594.

It is a happy number.

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 495871 - 2⁹ = 495359 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8521 + ... + 8578.

It is an arithmetic number, because the mean of its divisors is an integer number (128250).

2⁴⁹⁵⁸⁷¹ is an apocalyptic number.

495871 is a deficient number, since it is larger than the sum of its proper divisors (17129).

495871 is a wasteful number, since it uses less digits than its factorization.

495871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17128.

The product of its digits is 10080, while the sum is 34.

The square root of 495871 is about 704.1810846650. The cubic root of 495871 is about 79.1509691252.

The spelling of 495871 in words is "four hundred ninety-five thousand, eight hundred seventy-one".