6521056 has 24 divisors (see below), whose sum is σ = 13282920. Its totient is φ = 3147648.

The previous prime is 6521041. The next prime is 6521057. The reversal of 6521056 is 6501256.

It is an alternating number because its digits alternate between even and odd.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 6521056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6521057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2586 + ... + 4441.

It is an arithmetic number, because the mean of its divisors is an integer number (553455).

Almost surely, 2^6521056 is an apocalyptic number.

It is an amenable number.

6521056 is an abundant number, since it is smaller than the sum of its proper divisors (6761864).

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

6521056 is a wasteful number, since it uses less digits than its factorization.

6521056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7066 (or 7058 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 6521056 is about 2553.6358393475. The cubic root of 6521056 is about 186.8268579546.

The spelling of 6521056 in words is "six million, five hundred twenty-one thousand, fifty-six".