553345440 has 96 divisors (see below), whose sum is σ = 1776007296. Its totient is φ = 144768000.

The previous prime is 553345439. The next prime is 553345447. The reversal of 553345440 is 44543355.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (553345447) 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 15 ways as a sum of consecutive naturals, for example, 14565 + ... + 36315.

It is an arithmetic number, because the mean of its divisors is an integer number (18500076).

Almost surely, 2^553345440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 553345440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (888003648).

553345440 is an abundant number, since it is smaller than the sum of its proper divisors (1222661856).

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

553345440 is a wasteful number, since it uses less digits than its factorization.

553345440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21822 (or 21814 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 33.

The square root of 553345440 is about 23523.2956874669. The cubic root of 553345440 is about 820.9791199280.

Adding to 553345440 its reverse (44543355), we get a palindrome (597888795).

The spelling of 553345440 in words is "five hundred fifty-three million, three hundred forty-five thousand, four hundred forty".