556605505 has 8 divisors (see below), whose sum is σ = 668053224. Its totient is φ = 445200000.

The previous prime is 556605499. The next prime is 556605521. The reversal of 556605505 is 505506655.

It can be written as a sum of positive squares in 4 ways, for example, as 89699841 + 466905664 = 9471^2 + 21608^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 556605505 - 2¹¹ = 556603457 is a prime.

It is a super-3 number, since 3×556605505³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47205 + ... + 57805.

It is an arithmetic number, because the mean of its divisors is an integer number (83506653).

Almost surely, 2^556605505 is an apocalyptic number.

It is an amenable number.

556605505 is a deficient number, since it is larger than the sum of its proper divisors (111447719).

556605505 is a wasteful number, since it uses less digits than its factorization.

556605505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21107.

The product of its (nonzero) digits is 112500, while the sum is 37.

The square root of 556605505 is about 23592.4883172589. The cubic root of 556605505 is about 822.5882451366.

The spelling of 556605505 in words is "five hundred fifty-six million, six hundred five thousand, five hundred five".