253013443 has 4 divisors (see below), whose sum is σ = 266329960. Its totient is φ = 239696928.

The previous prime is 253013389. The next prime is 253013447. The reversal of 253013443 is 344310352.

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 253013443 - 2²¹ = 250916291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253013447) 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, 6658230 + ... + 6658267.

It is an arithmetic number, because the mean of its divisors is an integer number (66582490).

Almost surely, 2^253013443 is an apocalyptic number.

253013443 is a deficient number, since it is larger than the sum of its proper divisors (13316517).

253013443 is a wasteful number, since it uses less digits than its factorization.

253013443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13316516.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 253013443 is about 15906.3962920581. The cubic root of 253013443 is about 632.4815561183.

Adding to 253013443 its reverse (344310352), we get a palindrome (597323795).

The spelling of 253013443 in words is "two hundred fifty-three million, thirteen thousand, four hundred forty-three".