497503 has 4 divisors (see below), whose sum is σ = 499000. Its totient is φ = 496008.

The previous prime is 497501. The next prime is 497507. The reversal of 497503 is 305794.

497503 is a nontrivial binomial coefficient, being equal to C(998, 2).

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 305794 = 2 ⋅152897.

It is a 3-Lehmer number, since φ(497503) divides (497503-1)³.

It is a cyclic number.

It is not a de Polignac number, because 497503 - 2¹ = 497501 is a prime.

It is a deceptive number, since it divides R₄₉₇₅₀₂.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497501) 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, 1 + ... + 997.

It is an arithmetic number, because the mean of its divisors is an integer number (124750).

2⁴⁹⁷⁵⁰³ is an apocalyptic number.

497503 is the 997-th triangular number and also the 499-th hexagonal number.

497503 is the 333-rd centered nonagonal number.

497503 is a deficient number, since it is larger than the sum of its proper divisors (1497).

497503 is an equidigital number, since it uses as much as digits as its factorization.

497503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 497503 is about 705.3389256237. The cubic root of 497503 is about 79.2377073617.

It can be divided in two parts, 497 and 503, that added together give a cube (1000 = 10³).

The spelling of 497503 in words is "four hundred ninety-seven thousand, five hundred three".