253642503 has 16 divisors (see below), whose sum is σ = 350553600. Its totient is φ = 163021056.

The previous prime is 253642483. The next prime is 253642517. The reversal of 253642503 is 305246352.

It is not a de Polignac number, because 253642503 - 2⁸ = 253642247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253642553) 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, 3978 + ... + 22871.

It is an arithmetic number, because the mean of its divisors is an integer number (21909600).

Almost surely, 2^253642503 is an apocalyptic number.

253642503 is a deficient number, since it is larger than the sum of its proper divisors (96911097).

253642503 is a wasteful number, since it uses less digits than its factorization.

253642503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26966.

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 253642503 is about 15926.1578229025. The cubic root of 253642503 is about 633.0052958335.

Adding to 253642503 its reverse (305246352), we get a palindrome (558888855).

The spelling of 253642503 in words is "two hundred fifty-three million, six hundred forty-two thousand, five hundred three".