556005501 has 12 divisors (see below), whose sum is σ = 803344828. Its totient is φ = 370566144.

The previous prime is 556005497. The next prime is 556005503. The reversal of 556005501 is 105500655.

556005501 is a `hidden beast` number, since 5 + 5 + 600 + 5 + 50 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 238239225 + 317766276 = 15435^2 + 17826^2 .

It is not a de Polignac number, because 556005501 - 2² = 556005497 is a prime.

It is a super-2 number, since 2×556005501² = 618284234284522002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 38751 + ... + 51123.

Almost surely, 2^556005501 is an apocalyptic number.

It is an amenable number.

556005501 is a deficient number, since it is larger than the sum of its proper divisors (247339327).

556005501 is a wasteful number, since it uses less digits than its factorization.

556005501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17372 (or 17369 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 556005501 is about 23579.7688919972. The cubic root of 556005501 is about 822.2925637336.

The spelling of 556005501 in words is "five hundred fifty-six million, five thousand, five hundred one".