556055665 has 16 divisors (see below), whose sum is σ = 731068416. Its totient is φ = 402659200.

The previous prime is 556055651. The next prime is 556055671. The reversal of 556055665 is 566550655.

It is not a de Polignac number, because 556055665 - 2¹³ = 556047473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8881 + ... + 34510.

It is an arithmetic number, because the mean of its divisors is an integer number (45691776).

Almost surely, 2^556055665 is an apocalyptic number.

556055665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

556055665 is a deficient number, since it is larger than the sum of its proper divisors (175012751).

556055665 is a wasteful number, since it uses less digits than its factorization.

556055665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43640.

The product of its (nonzero) digits is 675000, while the sum is 43.

The square root of 556055665 is about 23580.8325764804. The cubic root of 556055665 is about 822.3172926518.

The spelling of 556055665 in words is "five hundred fifty-six million, fifty-five thousand, six hundred sixty-five".