253240444 has 12 divisors (see below), whose sum is σ = 443816968. Its totient is φ = 126435600.

The previous prime is 253240409. The next prime is 253240447. The reversal of 253240444 is 444042352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253240447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43047 + ... + 48574.

Almost surely, 2^253240444 is an apocalyptic number.

It is an amenable number.

253240444 is a deficient number, since it is larger than the sum of its proper divisors (190576524).

253240444 is a wasteful number, since it uses less digits than its factorization.

253240444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92316 (or 92314 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 253240444 is about 15913.5302180252. The cubic root of 253240444 is about 632.6706515114.

Adding to 253240444 its reverse (444042352), we get a palindrome (697282796).

The spelling of 253240444 in words is "two hundred fifty-three million, two hundred forty thousand, four hundred forty-four".