5566491 has 24 divisors (see below), whose sum is σ = 9266400. Its totient is φ = 3154176.

The previous prime is 5566489. The next prime is 5566499. The reversal of 5566491 is 1946655.

5566491 is a `hidden beast` number, since 5 + 5 + 6 + 649 + 1 = 666.

It is not a de Polignac number, because 5566491 - 2¹ = 5566489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5566499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9091 + ... + 9683.

It is an arithmetic number, because the mean of its divisors is an integer number (386100).

Almost surely, 2^5566491 is an apocalyptic number.

5566491 is a deficient number, since it is larger than the sum of its proper divisors (3699909).

5566491 is a wasteful number, since it uses less digits than its factorization.

5566491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755 (or 752 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 5566491 is about 2359.3412216125. The cubic root of 5566491 is about 177.2258918050.

It can be divided in two parts, 55664 and 91, that added together give a palindrome (55755).

The spelling of 5566491 in words is "five million, five hundred sixty-six thousand, four hundred ninety-one".