253503 has 16 divisors (see below), whose sum is σ = 386400. Its totient is φ = 164160.

The previous prime is 253501. The next prime is 253507. The reversal of 253503 is 305352.

It is not a de Polignac number, because 253503 - 2¹ = 253501 is a prime.

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 253503.

It is not an unprimeable number, because it can be changed into a prime (253501) 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, 993 + ... + 1221.

It is an arithmetic number, because the mean of its divisors is an integer number (24150).

2²⁵³⁵⁰³ is an apocalyptic number.

253503 is a deficient number, since it is larger than the sum of its proper divisors (132897).

253503 is a wasteful number, since it uses less digits than its factorization.

253503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 253503 is about 503.4908142161. The cubic root of 253503 is about 63.2889223894.

Adding to 253503 its reverse (305352), we get a palindrome (558855).

The spelling of 253503 in words is "two hundred fifty-three thousand, five hundred three".