5565557 has 4 divisors (see below), whose sum is σ = 5570700. Its totient is φ = 5560416.

The previous prime is 5565551. The next prime is 5565607. The reversal of 5565557 is 7555655.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1825201 + 3740356 = 1351^2 + 1934^2 .

It is a cyclic number.

It is not a de Polignac number, because 5565557 - 2¹² = 5561461 is a prime.

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 5565557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5565551) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 248 + ... + 3345.

It is an arithmetic number, because the mean of its divisors is an integer number (1392675).

Almost surely, 2^5565557 is an apocalyptic number.

It is an amenable number.

5565557 is a deficient number, since it is larger than the sum of its proper divisors (5143).

5565557 is a wasteful number, since it uses less digits than its factorization.

5565557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5142.

The product of its digits is 131250, while the sum is 38.

The square root of 5565557 is about 2359.1432767003. The cubic root of 5565557 is about 177.2159790226.

The spelling of 5565557 in words is "five million, five hundred sixty-five thousand, five hundred fifty-seven".