3125556 has 72 divisors (see below), whose sum is σ = 9201920. Its totient is φ = 876096.

The previous prime is 3125537. The next prime is 3125561. The reversal of 3125556 is 6555213.

It is an Ulam number.

It is a congruent number.

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, 19830 + ... + 19986.

Almost surely, 2^3125556 is an apocalyptic number.

3125556 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3125556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4600960).

3125556 is an abundant number, since it is smaller than the sum of its proper divisors (6076364).

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

3125556 is a wasteful number, since it uses less digits than its factorization.

3125556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 248 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 3125556 is about 1767.9242065202. The cubic root of 3125556 is about 146.2095570837.

The spelling of 3125556 in words is "three million, one hundred twenty-five thousand, five hundred fifty-six".