247503 has 16 divisors (see below), whose sum is σ = 366336. Its totient is φ = 147840.

The previous prime is 247501. The next prime is 247519. The reversal of 247503 is 305742.

It is a happy number.

It is not a de Polignac number, because 247503 - 2¹ = 247501 is a prime.

It is a super-2 number, since 2×247503² = 122515470018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 247503.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 247503.

It is not an unprimeable number, because it can be changed into a prime (247501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1068 + ... + 1278.

It is an arithmetic number, because the mean of its divisors is an integer number (22896).

2²⁴⁷⁵⁰³ is an apocalyptic number.

247503 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

247503 is a deficient number, since it is larger than the sum of its proper divisors (118833).

247503 is a wasteful number, since it uses less digits than its factorization.

247503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 247503 is about 497.4967336576. The cubic root of 247503 is about 62.7856154594.

It can be divided in two parts, 24750 and 3, that added together give a triangular number (24753 = T₂₂₂).

The spelling of 247503 in words is "two hundred forty-seven thousand, five hundred three".