253245503 has 4 divisors (see below), whose sum is σ = 289423440. Its totient is φ = 217067568.

The previous prime is 253245497. The next prime is 253245511. The reversal of 253245503 is 305542352.

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

It is a cyclic number.

It is not a de Polignac number, because 253245503 - 2¹⁰ = 253244479 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253245403) 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, 18088958 + ... + 18088971.

It is an arithmetic number, because the mean of its divisors is an integer number (72355860).

Almost surely, 2^253245503 is an apocalyptic number.

253245503 is a deficient number, since it is larger than the sum of its proper divisors (36177937).

253245503 is an equidigital number, since it uses as much as digits as its factorization.

253245503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36177936.

The product of its (nonzero) digits is 18000, while the sum is 29.

The square root of 253245503 is about 15913.6891700196. The cubic root of 253245503 is about 632.6748644503.

Adding to 253245503 its reverse (305542352), we get a palindrome (558787855).

The spelling of 253245503 in words is "two hundred fifty-three million, two hundred forty-five thousand, five hundred three".