495521 has 8 divisors (see below), whose sum is σ = 545664. Its totient is φ = 447120.

The previous prime is 495511. The next prime is 495527. The reversal of 495521 is 125594.

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 495521 - 2⁶ = 495457 is a prime.

It is a super-2 number, since 2×495521² = 491082122882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 495521.

It is not an unprimeable number, because it can be changed into a prime (495527) 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 7 ways as a sum of consecutive naturals, for example, 206 + ... + 1016.

It is an arithmetic number, because the mean of its divisors is an integer number (68208).

2⁴⁹⁵⁵²¹ is an apocalyptic number.

It is an amenable number.

495521 is a deficient number, since it is larger than the sum of its proper divisors (50143).

495521 is a wasteful number, since it uses less digits than its factorization.

495521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871.

The product of its digits is 1800, while the sum is 26.

The square root of 495521 is about 703.9325251755. The cubic root of 495521 is about 79.1323423994.

The spelling of 495521 in words is "four hundred ninety-five thousand, five hundred twenty-one".