3521056 has 48 divisors (see below), whose sum is σ = 8648640. Its totient is φ = 1370880.

The previous prime is 3521053. The next prime is 3521059. The reversal of 3521056 is 6501253.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3521053) and next prime (3521059).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an Ulam number.

3521056 is a modest number, since divided by 1056 gives 352 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1750 + ... + 3178.

It is an arithmetic number, because the mean of its divisors is an integer number (180180).

Almost surely, 2^3521056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3521056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4324320).

3521056 is an abundant number, since it is smaller than the sum of its proper divisors (5127584).

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

3521056 is a wasteful number, since it uses less digits than its factorization.

3521056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457 (or 1449 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 3521056 is about 1876.4477077713. The cubic root of 3521056 is about 152.1333087194.

The spelling of 3521056 in words is "three million, five hundred twenty-one thousand, fifty-six".