5631556 has 24 divisors (see below), whose sum is σ = 11926656. Its totient is φ = 2271360.

The previous prime is 5631541. The next prime is 5631569. The reversal of 5631556 is 6551365.

5631556 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×5631556² = 63428845962272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

5631556 is strictly pandigital in base 8.

It is a zygodrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5440 + ... + 6391.

It is an arithmetic number, because the mean of its divisors is an integer number (496944).

Almost surely, 2^5631556 is an apocalyptic number.

It is an amenable number.

5631556 is an abundant number, since it is smaller than the sum of its proper divisors (6295100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5631556 is a wasteful number, since it uses less digits than its factorization.

5631556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11859 (or 11857 counting only the distinct ones).

The product of its digits is 13500, while the sum is 31.

The square root of 5631556 is about 2373.0899687960. The cubic root of 5631556 is about 177.9137317100.

The spelling of 5631556 in words is "five million, six hundred thirty-one thousand, five hundred fifty-six".