5566405 has 16 divisors (see below), whose sum is σ = 7444080. Its totient is φ = 3967488.

The previous prime is 5566403. The next prime is 5566409. The reversal of 5566405 is 5046655.

It can be written as a sum of positive squares in 8 ways, for example, as 39204 + 5527201 = 198^2 + 2351^2 .

It is a cyclic number.

It is not a de Polignac number, because 5566405 - 2¹ = 5566403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5566403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409 + ... + 3361.

It is an arithmetic number, because the mean of its divisors is an integer number (465255).

Almost surely, 2^5566405 is an apocalyptic number.

It is an amenable number.

5566405 is a deficient number, since it is larger than the sum of its proper divisors (1877675).

5566405 is a wasteful number, since it uses less digits than its factorization.

5566405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 5566405 is about 2359.3229961156. The cubic root of 5566405 is about 177.2249791112.

The spelling of 5566405 in words is "five million, five hundred sixty-six thousand, four hundred five".