5581365 has 16 divisors (see below), whose sum is σ = 8959488. Its totient is φ = 2966976.

The previous prime is 5581363. The next prime is 5581379. The reversal of 5581365 is 5631855.

It is not a de Polignac number, because 5581365 - 2¹ = 5581363 is a prime.

It is a Curzon number.

5581365 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5581363) 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, 8799 + ... + 9411.

It is an arithmetic number, because the mean of its divisors is an integer number (559968).

Almost surely, 2^5581365 is an apocalyptic number.

It is an amenable number.

5581365 is a deficient number, since it is larger than the sum of its proper divisors (3378123).

5581365 is a wasteful number, since it uses less digits than its factorization.

5581365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228.

The product of its digits is 18000, while the sum is 33.

The square root of 5581365 is about 2362.4912698251. The cubic root of 5581365 is about 177.3836041767.

The spelling of 5581365 in words is "five million, five hundred eighty-one thousand, three hundred sixty-five".