253513243 has 2 divisors, whose sum is σ = 253513244. Its totient is φ = 253513242.

The previous prime is 253513241. The next prime is 253513259. The reversal of 253513243 is 342315352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253513243 - 2¹ = 253513241 is a prime.

Together with 253513241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (253513241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126756621 + 126756622.

It is an arithmetic number, because the mean of its divisors is an integer number (126756622).

Almost surely, 2^253513243 is an apocalyptic number.

253513243 is a deficient number, since it is larger than the sum of its proper divisors (1).

253513243 is an equidigital number, since it uses as much as digits as its factorization.

253513243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 28.

The square root of 253513243 is about 15922.0992020525. The cubic root of 253513243 is about 632.8977479176.

Adding to 253513243 its reverse (342315352), we get a palindrome (595828595).

The spelling of 253513243 in words is "two hundred fifty-three million, five hundred thirteen thousand, two hundred forty-three".