253524321 has 12 divisors (see below), whose sum is σ = 366343380. Its totient is φ = 168950880.

The previous prime is 253524289. The next prime is 253524329. The reversal of 253524321 is 123425352.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 247590225 + 5934096 = 15735^2 + 2436^2 .

It is not a de Polignac number, because 253524321 - 2⁵ = 253524289 is a prime.

It is a super-2 number, since 2×253524321² = 128549162677022082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (253524329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34731 + ... + 41391.

It is an arithmetic number, because the mean of its divisors is an integer number (30528615).

Almost surely, 2^253524321 is an apocalyptic number.

It is an amenable number.

253524321 is a deficient number, since it is larger than the sum of its proper divisors (112819059).

253524321 is a wasteful number, since it uses less digits than its factorization.

253524321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10896 (or 10893 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 253524321 is about 15922.4470795164. The cubic root of 253524321 is about 632.9069665539.

Adding to 253524321 its reverse (123425352), we get a palindrome (376949673).

The spelling of 253524321 in words is "two hundred fifty-three million, five hundred twenty-four thousand, three hundred twenty-one".