6521116 has 36 divisors (see below), whose sum is σ = 13451088. Its totient is φ = 2765952.

The previous prime is 6521111. The next prime is 6521131. The reversal of 6521116 is 6111256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6521111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67180 + ... + 67276.

Almost surely, 2^6521116 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 6521116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6725544).

6521116 is an abundant number, since it is smaller than the sum of its proper divisors (6929972).

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

6521116 is an frugal number, since it uses more digits than its factorization.

6521116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 106 counting only the distinct ones).

The product of its digits is 360, while the sum is 22.

The square root of 6521116 is about 2553.6475872759. The cubic root of 6521116 is about 186.8274309485.

The spelling of 6521116 in words is "six million, five hundred twenty-one thousand, one hundred sixteen".