5531605 has 8 divisors (see below), whose sum is σ = 6867000. Its totient is φ = 4272576.

The previous prime is 5531599. The next prime is 5531621. The reversal of 5531605 is 5061355.

It can be written as a sum of positive squares in 4 ways, for example, as 1623076 + 3908529 = 1274^2 + 1977^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5531605 is a prime.

5531605 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5531605.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 18930 + ... + 19219.

It is an arithmetic number, because the mean of its divisors is an integer number (858375).

Almost surely, 2^5531605 is an apocalyptic number.

It is an amenable number.

5531605 is a deficient number, since it is larger than the sum of its proper divisors (1335395).

5531605 is a wasteful number, since it uses less digits than its factorization.

5531605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38183.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 5531605 is about 2351.9364362159. The cubic root of 5531605 is about 176.8548822778.

The spelling of 5531605 in words is "five million, five hundred thirty-one thousand, six hundred five".