556005505 has 24 divisors (see below), whose sum is σ = 735881472. Its totient is φ = 399960000.

The previous prime is 556005503. The next prime is 556005509. The reversal of 556005505 is 505500655.

It is not a de Polignac number, because 556005505 - 2¹ = 556005503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556005503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 560560 + ... + 561550.

It is an arithmetic number, because the mean of its divisors is an integer number (30661728).

Almost surely, 2^556005505 is an apocalyptic number.

556005505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

556005505 is a deficient number, since it is larger than the sum of its proper divisors (179875967).

556005505 is a wasteful number, since it uses less digits than its factorization.

556005505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 31.

The square root of 556005505 is about 23579.7689768157. The cubic root of 556005505 is about 822.2925657055.

The spelling of 556005505 in words is "five hundred fifty-six million, five thousand, five hundred five".