5655565 has 4 divisors (see below), whose sum is σ = 6786684. Its totient is φ = 4524448.

The previous prime is 5655541. The next prime is 5655569.

5655565 is nontrivially palindromic in base 10 and base 11.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3526884 + 2128681 = 1878^2 + 1459^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5655565 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 (5655569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565552 + ... + 565561.

It is an arithmetic number, because the mean of its divisors is an integer number (1696671).

Almost surely, 2^5655565 is an apocalyptic number.

It is an amenable number.

5655565 is a deficient number, since it is larger than the sum of its proper divisors (1131119).

5655565 is a wasteful number, since it uses less digits than its factorization.

5655565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131118.

The product of its digits is 112500, while the sum is 37.

The square root of 5655565 is about 2378.1431832419. The cubic root of 5655565 is about 178.1662063281.

The spelling of 5655565 in words is "five million, six hundred fifty-five thousand, five hundred sixty-five".