556006550557 has 4 divisors (see below), whose sum is σ = 562253815260. Its totient is φ = 549759285856.

The previous prime is 556006550551. The next prime is 556006550563. The reversal of 556006550557 is 755055600655.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (556006550551) and next prime (556006550563).

It can be written as a sum of positive squares in 2 ways, for example, as 303219827716 + 252786722841 = 550654^2 + 502779^2 .

It is a cyclic number.

It is not a de Polignac number, because 556006550557 - 2³¹ = 553859066909 is a prime.

It is a super-3 number, since 3×556006550557³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 556006550557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556006550551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3123632218 + ... + 3123632395.

It is an arithmetic number, because the mean of its divisors is an integer number (140563453815).

Almost surely, 2^556006550557 is an apocalyptic number.

It is an amenable number.

556006550557 is a deficient number, since it is larger than the sum of its proper divisors (6247264703).

556006550557 is an equidigital number, since it uses as much as digits as its factorization.

556006550557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6247264702.

The product of its (nonzero) digits is 3937500, while the sum is 49.

The spelling of 556006550557 in words is "five hundred fifty-six billion, six million, five hundred fifty thousand, five hundred fifty-seven".