497644559 has 4 divisors (see below), whose sum is σ = 498634416. Its totient is φ = 496654704.

The previous prime is 497644541. The next prime is 497644571. The reversal of 497644559 is 955446794.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-497644559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 497644559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497644529) 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, 494174 + ... + 495179.

It is an arithmetic number, because the mean of its divisors is an integer number (124658604).

Almost surely, 2^497644559 is an apocalyptic number.

497644559 is a deficient number, since it is larger than the sum of its proper divisors (989857).

497644559 is an equidigital number, since it uses as much as digits as its factorization.

497644559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989856.

The product of its digits is 5443200, while the sum is 53.

The square root of 497644559 is about 22307.9483368597. The cubic root of 497644559 is about 792.4522205469.

The spelling of 497644559 in words is "four hundred ninety-seven million, six hundred forty-four thousand, five hundred fifty-nine".