5551556 has 12 divisors (see below), whose sum is σ = 10137792. Its totient is φ = 2655048.

The previous prime is 5551531. The next prime is 5551583. The reversal of 5551556 is 6551555.

It is a super-2 number, since 2×5551556² = 61639548042272, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 30080 + ... + 30263.

It is an arithmetic number, because the mean of its divisors is an integer number (844816).

Almost surely, 2^5551556 is an apocalyptic number.

It is an amenable number.

5551556 is a deficient number, since it is larger than the sum of its proper divisors (4586236).

5551556 is a wasteful number, since it uses less digits than its factorization.

5551556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60370 (or 60368 counting only the distinct ones).

The product of its digits is 18750, while the sum is 32.

The square root of 5551556 is about 2356.1740173425. The cubic root of 5551556 is about 177.0672497073.

Subtracting 5551556 from its reverse (6551555), we obtain a palindrome (999999).

The spelling of 5551556 in words is "five million, five hundred fifty-one thousand, five hundred fifty-six".