556555565 has 8 divisors (see below), whose sum is σ = 668003328. Its totient is φ = 445153360.

The previous prime is 556555561. The next prime is 556555567. The reversal of 556555565 is 565555655.

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

It is not a de Polignac number, because 556555565 - 2² = 556555561 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556555561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27680 + ... + 43350.

It is an arithmetic number, because the mean of its divisors is an integer number (83500416).

Almost surely, 2^556555565 is an apocalyptic number.

It is an amenable number.

556555565 is a deficient number, since it is larger than the sum of its proper divisors (111447763).

556555565 is a wasteful number, since it uses less digits than its factorization.

556555565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22779.

The product of its digits is 2812500, while the sum is 47.

The square root of 556555565 is about 23591.4299057942. The cubic root of 556555565 is about 822.5636428613.

The spelling of 556555565 in words is "five hundred fifty-six million, five hundred fifty-five thousand, five hundred sixty-five".