5581559 has 4 divisors (see below), whose sum is σ = 5909904. Its totient is φ = 5253216.

The previous prime is 5581553. The next prime is 5581591. The reversal of 5581559 is 9551855.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5581559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5581553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164147 + ... + 164180.

It is an arithmetic number, because the mean of its divisors is an integer number (1477476).

Almost surely, 2^5581559 is an apocalyptic number.

5581559 is a deficient number, since it is larger than the sum of its proper divisors (328345).

5581559 is a wasteful number, since it uses less digits than its factorization.

5581559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328344.

The product of its digits is 45000, while the sum is 38.

The square root of 5581559 is about 2362.5323278211. The cubic root of 5581559 is about 177.3856593502.

The spelling of 5581559 in words is "five million, five hundred eighty-one thousand, five hundred fifty-nine".