495881 has 4 divisors (see below), whose sum is σ = 522000. Its totient is φ = 469764.

The previous prime is 495877. The next prime is 495893. The reversal of 495881 is 188594.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 495881 - 2² = 495877 is a prime.

It is a super-2 number, since 2×495881² = 491795932322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (495821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13031 + ... + 13068.

It is an arithmetic number, because the mean of its divisors is an integer number (130500).

2⁴⁹⁵⁸⁸¹ is an apocalyptic number.

It is an amenable number.

495881 is a deficient number, since it is larger than the sum of its proper divisors (26119).

495881 is a wasteful number, since it uses less digits than its factorization.

495881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26118.

The product of its digits is 11520, while the sum is 35.

The square root of 495881 is about 704.1881850756. The cubic root of 495881 is about 79.1515011886.

The spelling of 495881 in words is "four hundred ninety-five thousand, eight hundred eighty-one".