556565 has 8 divisors (see below), whose sum is σ = 673080. Its totient is φ = 441792.

The previous prime is 556559. The next prime is 556573. The reversal of 556565 is 565655.

556565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 49 + 556516 = 7^2 + 746^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 556565 - 2¹² = 552469 is a prime.

It is a congruent 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, 431 + ... + 1139.

It is an arithmetic number, because the mean of its divisors is an integer number (84135).

2⁵⁵⁶⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

556565 is a deficient number, since it is larger than the sum of its proper divisors (116515).

556565 is a wasteful number, since it uses less digits than its factorization.

556565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871.

The product of its digits is 22500, while the sum is 32.

The square root of 556565 is about 746.0328411002. The cubic root of 556565 is about 82.2568291001.

The spelling of 556565 in words is "five hundred fifty-six thousand, five hundred sixty-five".