6551280 has 120 divisors (see below), whose sum is σ = 22883952. Its totient is φ = 1741824.

The previous prime is 6551249. The next prime is 6551291. The reversal of 6551280 is 821556.

6551280 is a `hidden beast` number, since 655 + 1 + 2 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 19272 + ... + 19608.

Almost surely, 2^6551280 is an apocalyptic number.

6551280 is a gapful number since it is divisible by the number (60) 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 6551280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11441976).

6551280 is an abundant number, since it is smaller than the sum of its proper divisors (16332672).

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

6551280 is a wasteful number, since it uses less digits than its factorization.

6551280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 6551280 is about 2559.5468348909. The cubic root of 6551280 is about 187.1150502137.

The spelling of 6551280 in words is "six million, five hundred fifty-one thousand, two hundred eighty".