555320120 has 64 divisors (see below), whose sum is σ = 1280426400. Its totient is φ = 216691200.

The previous prime is 555320107. The next prime is 555320123. The reversal of 555320120 is 21023555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555320123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291170 + ... + 293070.

Almost surely, 2^555320120 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 555320120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (640213200).

555320120 is an abundant number, since it is smaller than the sum of its proper divisors (725106280).

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

555320120 is a wasteful number, since it uses less digits than its factorization.

555320120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088 (or 2084 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 555320120 is about 23565.2311679729. The cubic root of 555320120 is about 821.9545482334.

Adding to 555320120 its reverse (21023555), we get a palindrome (576343675).

The spelling of 555320120 in words is "five hundred fifty-five million, three hundred twenty thousand, one hundred twenty".