495381 has 8 divisors (see below), whose sum is σ = 671584. Its totient is φ = 324720.

The previous prime is 495377. The next prime is 495389. The reversal of 495381 is 183594.

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

It is not a de Polignac number, because 495381 - 2² = 495377 is a prime.

It is a super-2 number, since 2×495381² = 490804670322, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495389) 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, 1171 + ... + 1536.

It is an arithmetic number, because the mean of its divisors is an integer number (83948).

2⁴⁹⁵³⁸¹ is an apocalyptic number.

It is an amenable number.

495381 is a deficient number, since it is larger than the sum of its proper divisors (176203).

495381 is a wasteful number, since it uses less digits than its factorization.

495381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771.

The product of its digits is 4320, while the sum is 30.

The square root of 495381 is about 703.8330768016. The cubic root of 495381 is about 79.1248892531.

The spelling of 495381 in words is "four hundred ninety-five thousand, three hundred eighty-one".