5591605 has 16 divisors (see below), whose sum is σ = 7171200. Its totient is φ = 4173120.

The previous prime is 5591587. The next prime is 5591609. The reversal of 5591605 is 5061955.

It is a happy number.

It is not a de Polignac number, because 5591605 - 2¹¹ = 5589557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5591609) 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 15 ways as a sum of consecutive naturals, for example, 6331 + ... + 7159.

It is an arithmetic number, because the mean of its divisors is an integer number (448200).

Almost surely, 2^5591605 is an apocalyptic number.

It is an amenable number.

5591605 is a deficient number, since it is larger than the sum of its proper divisors (1579595).

5591605 is a wasteful number, since it uses less digits than its factorization.

5591605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 5591605 is about 2364.6574804821. The cubic root of 5591605 is about 177.4920184204.

Subtracting from 5591605 its product of nonzero digits (6750), we obtain a palindrome (5584855).

The spelling of 5591605 in words is "five million, five hundred ninety-one thousand, six hundred five".