552431440 has 80 divisors (see below), whose sum is σ = 1449550080. Its totient is φ = 193948160.

The previous prime is 552431419. The next prime is 552431447. The reversal of 552431440 is 44134255.

552431440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 552431399 and 552431408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552431447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14697 + ... + 36343.

It is an arithmetic number, because the mean of its divisors is an integer number (18119376).

Almost surely, 2^552431440 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 552431440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (724775040).

552431440 is an abundant number, since it is smaller than the sum of its proper divisors (897118640).

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

552431440 is a wasteful number, since it uses less digits than its factorization.

552431440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21700 (or 21694 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 552431440 is about 23503.8601085013. The cubic root of 552431440 is about 820.5268476281.

Adding to 552431440 its reverse (44134255), we get a palindrome (596565695).

The spelling of 552431440 in words is "five hundred fifty-two million, four hundred thirty-one thousand, four hundred forty".