553240 has 16 divisors (see below), whose sum is σ = 1244880. Its totient is φ = 221280.

The previous prime is 553229. The next prime is 553249. The reversal of 553240 is 42355.

553240 = 185² + 186² + ... + 199².

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553249) by changing a digit.

553240 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6876 + ... + 6955.

It is an arithmetic number, because the mean of its divisors is an integer number (77805).

2⁵⁵³²⁴⁰ is an apocalyptic number.

It is an amenable number.

553240 is an abundant number, since it is smaller than the sum of its proper divisors (691640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

553240 is a wasteful number, since it uses less digits than its factorization.

553240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13842 (or 13838 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 553240 is about 743.8010486683. The cubic root of 553240 is about 82.0926970745.

Adding to 553240 its reverse (42355), we get a palindrome (595595).

The spelling of 553240 in words is "five hundred fifty-three thousand, two hundred forty".