553540 has 24 divisors (see below), whose sum is σ = 1252440. Its totient is φ = 204288.

The previous prime is 553529. The next prime is 553543. The reversal of 553540 is 45355.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4 + 553536 = 2^2 + 744^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553543) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 805 + ... + 1324.

It is an arithmetic number, because the mean of its divisors is an integer number (52185).

2⁵⁵³⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

553540 is an abundant number, since it is smaller than the sum of its proper divisors (698900).

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

553540 is a wasteful number, since it uses less digits than its factorization.

553540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151 (or 2149 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 553540 is about 744.0026881672. The cubic root of 553540 is about 82.1075329257.

Adding to 553540 its reverse (45355), we get a palindrome (598895).

The spelling of 553540 in words is "five hundred fifty-three thousand, five hundred forty".