5581556 has 12 divisors (see below), whose sum is σ = 9784320. Its totient is φ = 2786040.

The previous prime is 5581553. The next prime is 5581591. The reversal of 5581556 is 6551855.

It is a super-2 number, since 2×5581556² = 62307534762272, which contains 22 as substring.

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, 3725 + ... + 5003.

It is an arithmetic number, because the mean of its divisors is an integer number (815360).

Almost surely, 2^5581556 is an apocalyptic number.

It is an amenable number.

5581556 is a deficient number, since it is larger than the sum of its proper divisors (4202764).

5581556 is a wasteful number, since it uses less digits than its factorization.

5581556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374 (or 2372 counting only the distinct ones).

The product of its digits is 30000, while the sum is 35.

The square root of 5581556 is about 2362.5316929091. The cubic root of 5581556 is about 177.3856275695.

Subtracting 5581556 from its reverse (6551855), we obtain a cube (970299 = 99³).

The spelling of 5581556 in words is "five million, five hundred eighty-one thousand, five hundred fifty-six".