555344240 has 80 divisors (see below), whose sum is σ = 1429729920. Its totient is φ = 198908160.

The previous prime is 555344233. The next prime is 555344267. The reversal of 555344240 is 42443555.

555344240 is digitally balanced in base 6, 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 = 555344197 and 555344206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54251 + ... + 63669.

It is an arithmetic number, because the mean of its divisors is an integer number (17871624).

Almost surely, 2^555344240 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 555344240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (714864960).

555344240 is an abundant number, since it is smaller than the sum of its proper divisors (874385680).

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

555344240 is a wasteful number, since it uses less digits than its factorization.

555344240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9510 (or 9504 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 32.

The square root of 555344240 is about 23565.7429333344. The cubic root of 555344240 is about 821.9664484305.

Adding to 555344240 its reverse (42443555), we get a palindrome (597787795).

The spelling of 555344240 in words is "five hundred fifty-five million, three hundred forty-four thousand, two hundred forty".