555901920 has 384 divisors, whose sum is σ = 2299207680. Its totient is φ = 122757120.

The previous prime is 555901919. The next prime is 555901933. The reversal of 555901920 is 29109555.

555901920 is a `hidden beast` number, since 55 + 590 + 19 + 2 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 937144 + ... + 937736.

It is an arithmetic number, because the mean of its divisors is an integer number (5987520).

Almost surely, 2^555901920 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 555901920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1149603840).

555901920 is an abundant number, since it is smaller than the sum of its proper divisors (1743305760).

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

555901920 is a wasteful number, since it uses less digits than its factorization.

555901920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 36.

The square root of 555901920 is about 23577.5723941206. The cubic root of 555901920 is about 822.2414975867.

The spelling of 555901920 in words is "five hundred fifty-five million, nine hundred one thousand, nine hundred twenty".