3556530 has 48 divisors (see below), whose sum is σ = 9472320. Its totient is φ = 925344.

The previous prime is 3556523. The next prime is 3556543. The reversal of 3556530 is 356553.

It is a happy number.

3556530 is a `hidden beast` number, since 3 + 5 + 5 + 653 + 0 = 666.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3556494 and 3556503.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3411 + ... + 4329.

It is an arithmetic number, because the mean of its divisors is an integer number (197340).

Almost surely, 2^3556530 is an apocalyptic number.

3556530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3556530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4736160).

3556530 is an abundant number, since it is smaller than the sum of its proper divisors (5915790).

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

3556530 is a wasteful number, since it uses less digits than its factorization.

3556530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975 (or 972 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 27.

The square root of 3556530 is about 1885.8764540659. The cubic root of 3556530 is about 152.6425076556.

Subtracting from 3556530 its product of nonzero digits (6750), we obtain a triangular number (3549780 = T₂₆₆₄).

It can be divided in two parts, 35 and 56530, that added together give a palindrome (56565).

The spelling of 3556530 in words is "three million, five hundred fifty-six thousand, five hundred thirty".