253224404 has 24 divisors (see below), whose sum is σ = 459081000. Its totient is φ = 122071040.

The previous prime is 253224383. The next prime is 253224421. The reversal of 253224404 is 404422352.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 76387600 + 176836804 = 8740^2 + 13298^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120644 + ... + 122724.

It is an arithmetic number, because the mean of its divisors is an integer number (19128375).

Almost surely, 2^253224404 is an apocalyptic number.

It is an amenable number.

253224404 is a deficient number, since it is larger than the sum of its proper divisors (205856596).

253224404 is a wasteful number, since it uses less digits than its factorization.

253224404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3163 (or 3161 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 253224404 is about 15913.0262363889. The cubic root of 253224404 is about 632.6572936510.

Adding to 253224404 its reverse (404422352), we get a palindrome (657646756).

The spelling of 253224404 in words is "two hundred fifty-three million, two hundred twenty-four thousand, four hundred four".