495921 has 8 divisors (see below), whose sum is σ = 673920. Its totient is φ = 324272.

The previous prime is 495899. The next prime is 495923. The reversal of 495921 is 129594.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 495921 - 2¹¹ = 493873 is a prime.

495921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (495923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1401 + ... + 1718.

It is an arithmetic number, because the mean of its divisors is an integer number (84240).

2⁴⁹⁵⁹²¹ is an apocalyptic number.

It is an amenable number.

495921 is a deficient number, since it is larger than the sum of its proper divisors (177999).

495921 is a wasteful number, since it uses less digits than its factorization.

495921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3175.

The product of its digits is 3240, while the sum is 30.

The square root of 495921 is about 704.2165860018. The cubic root of 495921 is about 79.1536293705.

The spelling of 495921 in words is "four hundred ninety-five thousand, nine hundred twenty-one".