495591 has 8 divisors (see below), whose sum is σ = 664560. Its totient is φ = 328512.

The previous prime is 495589. The next prime is 495611. The reversal of 495591 is 195594.

495591 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 495591 - 2¹ = 495589 is a prime.

It is a super-2 number, since 2×495591² = 491220878562, which contains 22 as substring.

495591 is strictly pandigital in base 7.

It is a nialpdrome in base 14.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495511) 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, 345 + ... + 1053.

It is an arithmetic number, because the mean of its divisors is an integer number (83070).

2⁴⁹⁵⁵⁹¹ is an apocalyptic number.

495591 is a deficient number, since it is larger than the sum of its proper divisors (168969).

495591 is a wasteful number, since it uses less digits than its factorization.

495591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945.

The product of its digits is 8100, while the sum is 33.

The square root of 495591 is about 703.9822440943. The cubic root of 495591 is about 79.1360684460.

The spelling of 495591 in words is "four hundred ninety-five thousand, five hundred ninety-one".