3531556 has 12 divisors (see below), whose sum is σ = 7063168. Its totient is φ = 1513512.

The previous prime is 3531523. The next prime is 3531559. The reversal of 3531556 is 6551353.

It is a happy number.

3531556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

3531556 is an admirable number.

It is a super-2 number, since 2×3531556² = 24943775562272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 126127 = 3531556 / (3 + 5 + 3 + 1 + 5 + 5 + 6).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3531559) 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 3 ways as a sum of consecutive naturals, for example, 63036 + ... + 63091.

Almost surely, 2^3531556 is an apocalyptic number.

It is an amenable number.

3531556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3531556 is a wasteful number, since it uses less digits than its factorization.

3531556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126138 (or 126136 counting only the distinct ones).

The product of its digits is 6750, while the sum is 28.

The square root of 3531556 is about 1879.2434648017. The cubic root of 3531556 is about 152.2843821965.

The spelling of 3531556 in words is "three million, five hundred thirty-one thousand, five hundred fifty-six".