556405344 has 72 divisors (see below), whose sum is σ = 1726130952. Its totient is φ = 168606720.

The previous prime is 556405327. The next prime is 556405363. The reversal of 556405344 is 443504655.

556405344 is a `hidden beast` number, since 5 + 5 + 640 + 5 + 3 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 556405299 and 556405308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84649 + ... + 90984.

It is an arithmetic number, because the mean of its divisors is an integer number (23974041).

Almost surely, 2^556405344 is an apocalyptic number.

It is an amenable number.

556405344 is an abundant number, since it is smaller than the sum of its proper divisors (1169725608).

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

556405344 is a wasteful number, since it uses less digits than its factorization.

556405344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175660 (or 175649 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The square root of 556405344 is about 23588.2458864579. The cubic root of 556405344 is about 822.4896296152.

Adding to 556405344 its reverse (443504655), we get a palindrome (999909999).

The spelling of 556405344 in words is "five hundred fifty-six million, four hundred five thousand, three hundred forty-four".