6557120 has 56 divisors (see below), whose sum is σ = 16142208. Its totient is φ = 2534400.

The previous prime is 6557101. The next prime is 6557123. The reversal of 6557120 is 217556.

It is a self number, because there is not a number n which added to its sum of digits gives 6557120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6557123) 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, 9590 + ... + 10250.

Almost surely, 2^6557120 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 6557120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8071104).

6557120 is an abundant number, since it is smaller than the sum of its proper divisors (9585088).

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

6557120 is a wasteful number, since it uses less digits than its factorization.

6557120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 6557120 is about 2560.6874077091. The cubic root of 6557120 is about 187.1706336188.

The spelling of 6557120 in words is "six million, five hundred fifty-seven thousand, one hundred twenty".