253525243 has 4 divisors (see below), whose sum is σ = 256579848. Its totient is φ = 250470640.

The previous prime is 253525241. The next prime is 253525247. The reversal of 253525243 is 342525352.

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 253525243 - 2¹ = 253525241 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253525241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1527178 + ... + 1527343.

It is an arithmetic number, because the mean of its divisors is an integer number (64144962).

Almost surely, 2^253525243 is an apocalyptic number.

253525243 is a deficient number, since it is larger than the sum of its proper divisors (3054605).

253525243 is an equidigital number, since it uses as much as digits as its factorization.

253525243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3054604.

The product of its digits is 36000, while the sum is 31.

The square root of 253525243 is about 15922.4760323261. The cubic root of 253525243 is about 632.9077337906.

The spelling of 253525243 in words is "two hundred fifty-three million, five hundred twenty-five thousand, two hundred forty-three".