495571 has 2 divisors, whose sum is σ = 495572. Its totient is φ = 495570.

The previous prime is 495569. The next prime is 495587. The reversal of 495571 is 175594.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 495571 - 2¹ = 495569 is a prime.

Together with 495569, it forms a pair of twin primes.

495571 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (495511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247785 + 247786.

It is an arithmetic number, because the mean of its divisors is an integer number (247786).

2⁴⁹⁵⁵⁷¹ is an apocalyptic number.

495571 is a deficient number, since it is larger than the sum of its proper divisors (1).

495571 is an equidigital number, since it uses as much as digits as its factorization.

495571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 31.

The square root of 495571 is about 703.9680390472. The cubic root of 495571 is about 79.1350038971.

The spelling of 495571 in words is "four hundred ninety-five thousand, five hundred seventy-one".